diff --git a/include/Config.hpp b/include/Config.hpp
index 2dffce9..09172b3 100644
--- a/include/Config.hpp
+++ b/include/Config.hpp
@@ -14,7 +14,7 @@ namespace gsr {
     enum class ReplayStartupMode {
         DONT_TURN_ON_AUTOMATICALLY,
         TURN_ON_AT_SYSTEM_STARTUP,
-        TURN_ON_AT_FULLSCREEN,
+        TURN_ON_AT_GAME_LAUNCH,
         TURN_ON_AT_POWER_SUPPLY_CONNECTED
     };
 
@@ -46,10 +46,7 @@ namespace gsr {
         int32_t video_height = 0;
         int32_t fps = 60;
         int32_t video_bitrate = 8000;
-        bool merge_audio_tracks = true; // TODO: Remove in the future
-        bool application_audio_invert = false; // TODO: Remove in the future
         bool change_video_resolution = false;
-        std::vector<std::string> audio_tracks; // ids, TODO: Remove in the future
         std::vector<AudioTrack> audio_tracks_list;
         std::string color_range = "limited";
         std::string video_quality = "very_high";
diff --git a/include/Overlay.hpp b/include/Overlay.hpp
index 3599d84..4ecc344 100644
--- a/include/Overlay.hpp
+++ b/include/Overlay.hpp
@@ -123,19 +123,20 @@ namespace gsr {
         void grab_mouse_and_keyboard();
         void xi_setup_fake_cursor();
 
+        void close_gsr_game_tracker_output();
         void close_gpu_screen_recorder_output();
 
         double get_time_passed_in_replay_buffer_seconds();
         void update_notification_process_status();
         void save_video_in_current_game_directory(std::string &video_filepath, NotificationType notification_type);
         void on_replay_saved(const char *replay_saved_filepath);
+        void process_gsr_game_tracker_output();
         void process_gsr_output();
         void on_gsr_process_error(int exit_code, NotificationType notification_type);
         void update_gsr_process_status();
         void update_gsr_screenshot_process_status();
 
         void replay_status_update_status();
-        void update_focused_fullscreen_status();
         void update_power_supply_status();
         void update_system_startup_status();
 
@@ -227,7 +228,6 @@ namespace gsr {
         mgl::Clock replay_status_update_clock;
         std::string power_supply_online_filepath;
         bool power_supply_connected = false;
-        bool focused_window_is_fullscreen = false;
 
         std::string record_filepath;
         std::string screenshot_filepath;
@@ -253,13 +253,10 @@ namespace gsr {
         std::unique_ptr<GlobalHotkeysJoystick> global_hotkeys_js = nullptr;
         Display *x11_dpy = nullptr;
         XEvent x11_xev;
-        Atom net_active_window_atom;
-        bool update_focused_window = true;
-        std::vector<Window> game_windows;
-        double event_current_time_seconds = 0.0;
-        double gamescope_running_last_checked_seconds = 0.0;
-        bool is_gamescope_running = false;
-        bool is_game_running = false;
+
+        int gsr_game_tracker_process_output_fd = -1;
+        FILE *gsr_game_tracker_process_output_file = nullptr;
+        pid_t gsr_game_tracker_process_id = -1;
 
         struct wl_display *wayland_dpy = nullptr;
 
@@ -297,6 +294,5 @@ namespace gsr {
         std::unique_ptr<LedIndicator> led_indicator = nullptr;
 
         bool supports_window_title = false;
-        bool supports_window_fullscreen_state = false;
     };
 }
\ No newline at end of file
diff --git a/include/gui/SettingsPage.hpp b/include/gui/SettingsPage.hpp
index 2acb45e..8fc3ab5 100644
--- a/include/gui/SettingsPage.hpp
+++ b/include/gui/SettingsPage.hpp
@@ -41,7 +41,7 @@ namespace gsr {
             STREAM
         };
 
-        SettingsPage(Type type, const GsrInfo *gsr_info, Config &config, PageStack *page_stack, bool supports_window_title, bool supports_window_fullscreen_state);
+        SettingsPage(Type type, const GsrInfo *gsr_info, Config &config, PageStack *page_stack, bool supports_window_title);
         SettingsPage(const SettingsPage&) = delete;
         SettingsPage& operator=(const SettingsPage&) = delete;
 
@@ -253,6 +253,5 @@ namespace gsr {
         std::optional<GsrCameraSetup> selected_camera_setup;
 
         bool supports_window_title = false;
-        bool supports_window_fullscreen_state = false;
     };
 }
\ No newline at end of file
diff --git a/meson.build b/meson.build
index f47e90c..6e94adf 100644
--- a/meson.build
+++ b/meson.build
@@ -140,6 +140,14 @@ executable(
     install : true
 )
 
+executable(
+    'gsr-game-tracker',
+    [
+        'tools/gsr-game-tracker/main.c'
+    ],
+    install : true
+)
+
 install_subdir('images', install_dir : gsr_ui_resources_path)
 install_subdir('translations', install_dir : gsr_ui_resources_path)
 
diff --git a/src/Config.cpp b/src/Config.cpp
index d7a147b..35da83f 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -53,8 +53,8 @@ namespace gsr {
             return ReplayStartupMode::DONT_TURN_ON_AUTOMATICALLY;
         else if(strcmp(startup_mode_str, "turn_on_at_system_startup") == 0)
             return ReplayStartupMode::TURN_ON_AT_SYSTEM_STARTUP;
-        else if(strcmp(startup_mode_str, "turn_on_at_fullscreen") == 0)
-            return ReplayStartupMode::TURN_ON_AT_FULLSCREEN;
+        else if(strcmp(startup_mode_str, "turn_on_at_fullscreen") == 0 || strcmp(startup_mode_str, "turn_on_at_game_launch") == 0)
+            return ReplayStartupMode::TURN_ON_AT_GAME_LAUNCH;
         else if(strcmp(startup_mode_str, "turn_on_at_power_supply_connected") == 0)
             return ReplayStartupMode::TURN_ON_AT_POWER_SUPPLY_CONNECTED;
         else
@@ -188,10 +188,7 @@ namespace gsr {
             {"streaming.record_options.video_height", &config.streaming_config.record_options.video_height},
             {"streaming.record_options.fps", &config.streaming_config.record_options.fps},
             {"streaming.record_options.video_bitrate", &config.streaming_config.record_options.video_bitrate},
-            {"streaming.record_options.merge_audio_tracks", &config.streaming_config.record_options.merge_audio_tracks},
-            {"streaming.record_options.application_audio_invert", &config.streaming_config.record_options.application_audio_invert},
             {"streaming.record_options.change_video_resolution", &config.streaming_config.record_options.change_video_resolution},
-            {"streaming.record_options.audio_track", &config.streaming_config.record_options.audio_tracks},
             {"streaming.record_options.audio_track_item", &config.streaming_config.record_options.audio_tracks_list},
             {"streaming.record_options.color_range", &config.streaming_config.record_options.color_range},
             {"streaming.record_options.video_quality", &config.streaming_config.record_options.video_quality},
@@ -233,10 +230,7 @@ namespace gsr {
             {"record.record_options.video_height", &config.record_config.record_options.video_height},
             {"record.record_options.fps", &config.record_config.record_options.fps},
             {"record.record_options.video_bitrate", &config.record_config.record_options.video_bitrate},
-            {"record.record_options.merge_audio_tracks", &config.record_config.record_options.merge_audio_tracks},
-            {"record.record_options.application_audio_invert", &config.record_config.record_options.application_audio_invert},
             {"record.record_options.change_video_resolution", &config.record_config.record_options.change_video_resolution},
-            {"record.record_options.audio_track", &config.record_config.record_options.audio_tracks},
             {"record.record_options.audio_track_item", &config.record_config.record_options.audio_tracks_list},
             {"record.record_options.color_range", &config.record_config.record_options.color_range},
             {"record.record_options.video_quality", &config.record_config.record_options.video_quality},
@@ -275,10 +269,7 @@ namespace gsr {
             {"replay.record_options.video_height", &config.replay_config.record_options.video_height},
             {"replay.record_options.fps", &config.replay_config.record_options.fps},
             {"replay.record_options.video_bitrate", &config.replay_config.record_options.video_bitrate},
-            {"replay.record_options.merge_audio_tracks", &config.replay_config.record_options.merge_audio_tracks},
-            {"replay.record_options.application_audio_invert", &config.replay_config.record_options.application_audio_invert},
             {"replay.record_options.change_video_resolution", &config.replay_config.record_options.change_video_resolution},
-            {"replay.record_options.audio_track", &config.replay_config.record_options.audio_tracks},
             {"replay.record_options.audio_track_item", &config.replay_config.record_options.audio_tracks_list},
             {"replay.record_options.color_range", &config.replay_config.record_options.color_range},
             {"replay.record_options.video_quality", &config.replay_config.record_options.video_quality},
@@ -372,17 +363,6 @@ namespace gsr {
         return !operator==(other);
     }
 
-    static void populate_new_audio_track_from_old(RecordOptions &record_options) {
-        if(record_options.merge_audio_tracks) {
-            record_options.audio_tracks_list.push_back({std::move(record_options.audio_tracks), record_options.application_audio_invert});
-        } else {
-            for(const std::string &audio_input : record_options.audio_tracks) {
-                record_options.audio_tracks_list.push_back({std::vector<std::string>{audio_input}, record_options.application_audio_invert});
-            }
-        }
-        record_options.audio_tracks.clear();
-    }
-
     std::optional<Config> read_config(const SupportedCaptureOptions &capture_options) {
         std::optional<Config> config;
 
@@ -395,10 +375,6 @@ namespace gsr {
 
         config = Config(capture_options);
 
-        config->streaming_config.record_options.audio_tracks.clear();
-        config->record_config.record_options.audio_tracks.clear();
-        config->replay_config.record_options.audio_tracks.clear();
-
         config->streaming_config.record_options.audio_tracks_list.clear();
         config->record_config.record_options.audio_tracks_list.clear();
         config->replay_config.record_options.audio_tracks_list.clear();
@@ -465,15 +441,9 @@ namespace gsr {
             return true;
         });
 
-        if(config->main_config.config_file_version == 1) {
-            populate_new_audio_track_from_old(config->streaming_config.record_options);
-            populate_new_audio_track_from_old(config->record_config.record_options);
-            populate_new_audio_track_from_old(config->replay_config.record_options);
-        }
-
-        config->streaming_config.record_options.audio_tracks.clear();
-        config->record_config.record_options.audio_tracks.clear();
-        config->replay_config.record_options.audio_tracks.clear();
+        // TODO: Remove in the future
+        if(config->replay_config.turn_on_replay_automatically_mode == "turn_on_at_fullscreen")
+            config->replay_config.turn_on_replay_automatically_mode = "turn_on_at_game_launch";
 
         return config;
     }
diff --git a/src/Overlay.cpp b/src/Overlay.cpp
index 3cd0bb9..36f1bce 100644
--- a/src/Overlay.cpp
+++ b/src/Overlay.cpp
@@ -264,6 +264,42 @@ namespace gsr {
         return true;
     }
 
+    static bool are_all_audio_tracks_available_to_capture(const std::vector<AudioTrack> &audio_tracks) {
+        const auto audio_devices = get_audio_devices();
+        for(const AudioTrack &audio_track : audio_tracks) {
+            for(const std::string &audio_input : audio_track.audio_inputs) {
+                std::string_view audio_track_name(audio_input.c_str());
+                const bool is_app_audio = starts_with(audio_track_name, "app:");
+                if(is_app_audio)
+                    continue;
+
+                if(starts_with(audio_track_name, "device:"))
+                    audio_track_name.remove_prefix(7);
+
+                auto it = std::find_if(audio_devices.begin(), audio_devices.end(), [&](const auto &audio_device) {
+                    return audio_device.name == audio_track_name;
+                });
+                if(it == audio_devices.end()) {
+                    //fprintf(stderr, "Audio not ready\n");
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+
+    static bool is_webcam_available_to_capture(const RecordOptions &record_options) {
+        if(record_options.webcam_source.empty())
+            return true;
+
+        const auto cameras = get_v4l2_devices();
+        for(const GsrCamera &camera : cameras) {
+            if(camera.path == record_options.webcam_source)
+                return true;
+        }
+        return false;
+    }
+
     // Note that this doesn't work in the flatpak right now because of this flatpak bug:
     // https://github.com/flatpak/flatpak/issues/6486
     static bool is_hyprland_waybar_running_as_dock() {
@@ -466,12 +502,15 @@ namespace gsr {
         }
     }
 
-    static double clock_get_monotonic_seconds(void) {
-        struct timespec ts;
-        ts.tv_sec = 0;
-        ts.tv_nsec = 0;
-        clock_gettime(CLOCK_MONOTONIC, &ts);
-        return (double)ts.tv_sec + (double)ts.tv_nsec * 0.000000001;
+    static pid_t launch_gsr_game_tracker(int *stdout_fd) {
+        const bool is_flatpak = getenv("FLATPAK_ID") != nullptr;
+        if(is_flatpak) {
+            const char *args[] = { "flatpak-spawn", "--host", "--", "gsr-game-tracker", NULL };
+            return exec_program(args, stdout_fd, false);
+        } else {
+            const char *args[] = { "gsr-game-tracker", NULL };
+            return exec_program(args, stdout_fd, false);
+        }
     }
 
     Overlay::Overlay(std::string resources_path, GsrInfo gsr_info, SupportedCaptureOptions capture_options, egl_functions egl_funcs) :
@@ -484,9 +523,6 @@ namespace gsr {
         top_bar_background({0.0f, 0.0f}),
         close_button_widget({0.0f, 0.0f})
     {
-        event_current_time_seconds = clock_get_monotonic_seconds();
-        gamescope_running_last_checked_seconds = event_current_time_seconds - 10.0;
-
         if(this->gsr_info.system_info.display_server == DisplayServer::WAYLAND) {
             wayland_dpy = wl_display_connect(nullptr);
             if(!wayland_dpy)
@@ -530,8 +566,6 @@ namespace gsr {
 
         x11_dpy = XOpenDisplay(nullptr);
         if(x11_dpy) {
-            net_active_window_atom = XInternAtom(x11_dpy, "_NET_ACTIVE_WINDOW", False);
-            XSelectInput(x11_dpy, DefaultRootWindow(x11_dpy), PropertyChangeMask);
             XKeysymToKeycode(x11_dpy, XK_F1); // If we dont call we will never get a MappingNotify
         } else {
             fprintf(stderr, "Warning: XOpenDisplay failed to mapping notify\n");
@@ -540,7 +574,6 @@ namespace gsr {
         if(this->gsr_info.system_info.display_server == DisplayServer::X11) {
             cursor_tracker = std::make_unique<CursorTrackerX11>((Display*)mgl_get_context()->connection);
             supports_window_title = true;
-            supports_window_fullscreen_state = true;
         } else if(this->gsr_info.system_info.display_server == DisplayServer::WAYLAND) {
             if(!this->gsr_info.gpu_info.card_path.empty())
                 cursor_tracker = std::make_unique<CursorTrackerWayland>(this->gsr_info.gpu_info.card_path.c_str(), wayland_dpy);
@@ -553,6 +586,17 @@ namespace gsr {
         }
 
         update_led_indicator_after_settings_change();
+
+        gsr_game_tracker_process_id = launch_gsr_game_tracker(&gsr_game_tracker_process_output_fd);
+        if(gsr_game_tracker_process_id > 0) {
+            const int fdl = fcntl(gsr_game_tracker_process_output_fd, F_GETFL);
+            fcntl(gsr_game_tracker_process_output_fd, F_SETFL, fdl | O_NONBLOCK);
+            gsr_game_tracker_process_output_file = fdopen(gsr_game_tracker_process_output_fd, "r");
+            if(gsr_game_tracker_process_output_file)
+                gsr_game_tracker_process_output_fd = -1;
+        } else {
+            fprintf(stderr, "Warning: failed to launch gsr-game-tracker. The feature to start replay when a game starts will not work\n");
+        }
     }
 
     Overlay::~Overlay() {
@@ -588,8 +632,19 @@ namespace gsr {
             gpu_screen_recorder_screenshot_process = -1;
         }
 
+        if(gsr_game_tracker_process_id > 0) {
+            kill(gsr_game_tracker_process_id, SIGINT);
+            int status;
+            if(waitpid(gsr_game_tracker_process_id, &status, 0) == -1) {
+                perror("waitpid failed");
+                /* Ignore... */
+            }
+            gsr_game_tracker_process_id = -1;
+        }
+
         led_indicator.reset();
 
+        close_gsr_game_tracker_output();
         close_gpu_screen_recorder_output();
         deinit_color_theme();
 
@@ -650,6 +705,18 @@ namespace gsr {
         }
     }
 
+    void Overlay::close_gsr_game_tracker_output() {
+        if(gsr_game_tracker_process_output_file) {
+            fclose(gsr_game_tracker_process_output_file);
+            gsr_game_tracker_process_output_file = nullptr;
+        }
+
+        if(gsr_game_tracker_process_output_fd > 0) {
+            close(gsr_game_tracker_process_output_fd);
+            gsr_game_tracker_process_output_fd = -1;
+        }
+    }
+
     void Overlay::close_gpu_screen_recorder_output() {
         if(gpu_screen_recorder_process_output_file) {
             fclose(gpu_screen_recorder_process_output_file);
@@ -740,64 +807,6 @@ namespace gsr {
         }
     }
 
-    static bool x11_window_is_steam_game(Display *dpy, Window window) {
-        unsigned long steam_game_id = 0;
-        unsigned int property_size = 0;
-        unsigned char* steam_game_property = window_get_property(dpy, window, XA_CARDINAL, "STEAM_GAME", &property_size);
-        if(steam_game_property) {
-            if(property_size == 8)
-                steam_game_id = *(unsigned long*)steam_game_property;
-            XFree(steam_game_property);
-        }
-
-        const unsigned long steam_webhelper_game_id = 769;
-        return steam_game_id != 0 && steam_game_id != steam_webhelper_game_id;
-    }
-
-    // WINE/Godot/Unity application detection
-    static bool x11_window_class_is_game(Display *dpy, Window window) {
-        XClassHint class_hint = {nullptr, nullptr};
-        XGetClassHint(dpy, window, &class_hint);
-
-        const bool is_godot_application = class_hint.res_name && strcmp(class_hint.res_name, "Godot_Engine") == 0;
-        const bool is_wine_application = class_hint.res_class && (ends_with(class_hint.res_class, ".exe") || ends_with(class_hint.res_class, ".EXE"));
-        const bool is_native_unity_32bit_application = class_hint.res_class && ends_with(class_hint.res_class, ".x86");
-        const bool is_native_unity_64bit_application = class_hint.res_class && (ends_with(class_hint.res_class, ".x86_64") || ends_with(class_hint.res_class, ".x64"));
-
-        if(class_hint.res_name)
-            XFree(class_hint.res_name);
-
-        if(class_hint.res_class)
-            XFree(class_hint.res_class);
-
-        return is_godot_application || is_wine_application || is_native_unity_32bit_application || is_native_unity_64bit_application;
-    }
-
-    static bool x11_window_is_game(Display *dpy, Window window) {
-        return x11_window_is_steam_game(dpy, window) || x11_window_class_is_game(dpy, window);
-    }
-
-    static bool x11_is_server_gamescope(Display *dpy) {
-        bool is_gamescope = false;
-        unsigned int property_size = 0;
-        unsigned char* gamescope_focused_window = window_get_property(dpy, DefaultRootWindow(dpy), XA_CARDINAL, "GAMESCOPE_FOCUSED_WINDOW", &property_size);
-        if(gamescope_focused_window) {
-            is_gamescope = true;
-            XFree(gamescope_focused_window);
-        }
-        return is_gamescope;
-    }
-
-    static bool is_gamescope_x11_server_running() {
-        bool is_gamescope = false;
-        Display *gamescope_x11_dpy = XOpenDisplay(":2");
-        if(gamescope_x11_dpy) {
-            is_gamescope = x11_is_server_gamescope(gamescope_x11_dpy);
-            XCloseDisplay(gamescope_x11_dpy);
-        }
-        return is_gamescope;
-    }
-
     void Overlay::handle_keyboard_mapping_event() {
         if(!x11_dpy)
             return;
@@ -811,54 +820,14 @@ namespace gsr {
                     mapping_updated = true;
                     break;
                 }
-                case PropertyNotify: {
-                    if(x11_xev.xproperty.state == PropertyNewValue && x11_xev.xproperty.atom == net_active_window_atom)
-                        update_focused_window = true;
-                    break;
-                }
-                case DestroyNotify: {
-                    auto it = std::find(game_windows.begin(), game_windows.end(), x11_xev.xdestroywindow.window);
-                    if(it != game_windows.end())
-                        game_windows.erase(it);
-                    break;
-                }
             }
         }
 
         if(mapping_updated)
             rebind_all_keyboard_hotkeys();
-
-        if(update_focused_window) {
-            update_focused_window = false;
-
-            const Window focused_window = get_focused_window(x11_dpy, WindowCaptureType::FOCUSED, false);
-            if(x11_window_is_game(x11_dpy, focused_window)) {
-                if(std::find(game_windows.begin(), game_windows.end(), focused_window) == game_windows.end()) {
-                    XSelectInput(x11_dpy, focused_window, StructureNotifyMask);
-                    game_windows.push_back(focused_window);
-                }
-            }
-        }
-
-        if(event_current_time_seconds - gamescope_running_last_checked_seconds >= 3.0) {
-            gamescope_running_last_checked_seconds = event_current_time_seconds;
-            is_gamescope_running = is_gamescope_x11_server_running();
-        }
-
-        const bool prev_game_is_running = is_game_running;
-        is_game_running = !game_windows.empty() || is_gamescope_running;
-        if(is_game_running != prev_game_is_running) {
-            if(is_game_running) {
-                //fprintf(stderr, "started game\n");
-            } else {
-                //fprintf(stderr, "stopped game\n");
-            }
-        }
     }
 
     void Overlay::handle_events() {
-        event_current_time_seconds = clock_get_monotonic_seconds();
-
         if(led_indicator)
             led_indicator->update();
 
@@ -953,6 +922,7 @@ namespace gsr {
         }
 
         update_notification_process_status();
+        process_gsr_game_tracker_output();
         process_gsr_output();
         update_gsr_process_status();
         update_gsr_screenshot_process_status();
@@ -1362,7 +1332,7 @@ namespace gsr {
             button->set_item_icon("settings", &get_theme().settings_extra_small_texture);
             button->on_click = [this](const std::string &id) {
                 if(id == "settings") {
-                    auto replay_settings_page = std::make_unique<SettingsPage>(SettingsPage::Type::REPLAY, &gsr_info, config, &page_stack, supports_window_title, supports_window_fullscreen_state);
+                    auto replay_settings_page = std::make_unique<SettingsPage>(SettingsPage::Type::REPLAY, &gsr_info, config, &page_stack, supports_window_title);
                     replay_settings_page->on_config_changed = [this]() {
                         replay_startup_mode = replay_startup_string_to_type(config.replay_config.turn_on_replay_automatically_mode.c_str());
                         if(recording_status == RecordingStatus::REPLAY)
@@ -1396,7 +1366,7 @@ namespace gsr {
             button->set_item_icon("settings", &get_theme().settings_extra_small_texture);
             button->on_click = [this](const std::string &id) {
                 if(id == "settings") {
-                    auto record_settings_page = std::make_unique<SettingsPage>(SettingsPage::Type::RECORD, &gsr_info, config, &page_stack, supports_window_title, supports_window_fullscreen_state);
+                    auto record_settings_page = std::make_unique<SettingsPage>(SettingsPage::Type::RECORD, &gsr_info, config, &page_stack, supports_window_title);
                     record_settings_page->on_config_changed = [this]() {
                         if(recording_status == RecordingStatus::RECORD)
                             show_notification(TR("Recording settings have been modified. You may need to restart recording to apply the changes."), notification_timeout_seconds, mgl::Color(255, 255, 255), get_color_theme().tint_color, NotificationType::RECORD);
@@ -1423,7 +1393,7 @@ namespace gsr {
             button->set_item_icon("settings", &get_theme().settings_extra_small_texture);
             button->on_click = [this](const std::string &id) {
                 if(id == "settings") {
-                    auto stream_settings_page = std::make_unique<SettingsPage>(SettingsPage::Type::STREAM, &gsr_info, config, &page_stack, supports_window_title, supports_window_fullscreen_state);
+                    auto stream_settings_page = std::make_unique<SettingsPage>(SettingsPage::Type::STREAM, &gsr_info, config, &page_stack, supports_window_title);
                     stream_settings_page->on_config_changed = [this]() {
                         if(recording_status == RecordingStatus::STREAM)
                             show_notification(TR("Streaming settings have been modified. You may need to restart streaming to apply the changes."), notification_timeout_seconds, mgl::Color(255, 255, 255), get_color_theme().tint_color, NotificationType::STREAM);
@@ -2211,6 +2181,26 @@ namespace gsr {
             led_indicator->blink();
     }
 
+    void Overlay::process_gsr_game_tracker_output() {
+        char buffer[1024];
+        if(gsr_game_tracker_process_output_file) {
+            char *line = fgets(buffer, sizeof(buffer), gsr_game_tracker_process_output_file);
+            if(!line || line[0] == '\0')
+                return;
+
+            if(replay_startup_mode != ReplayStartupMode::TURN_ON_AT_GAME_LAUNCH)
+                return;
+
+            if(recording_status == RecordingStatus::NONE && strncmp(line, "Game launched", 13) == 0) {
+                on_press_start_replay(false, false);
+            } else if(recording_status == RecordingStatus::REPLAY && strncmp(line, "Game exited", 11) == 0) {
+                on_press_start_replay(false, false);
+            }
+        } else if(gsr_game_tracker_process_output_fd > 0) {
+            read(gsr_game_tracker_process_output_fd, buffer, sizeof(buffer));
+        }
+    }
+
     void Overlay::process_gsr_output() {
         if(replay_save_show_notification && replay_save_clock.get_elapsed_time_seconds() >= replay_saving_notification_timeout_seconds) {
             replay_save_show_notification = false;
@@ -2218,8 +2208,8 @@ namespace gsr {
                 show_notification(TR("Saving replay, this might take some time"), notification_timeout_seconds, mgl::Color(255, 255, 255), get_color_theme().tint_color, NotificationType::REPLAY);
         }
 
+        char buffer[1024];
         if(gpu_screen_recorder_process_output_file) {
-            char buffer[1024];
             char *line = fgets(buffer, sizeof(buffer), gpu_screen_recorder_process_output_file);
             if(!line || line[0] == '\0')
                 return;
@@ -2252,7 +2242,6 @@ namespace gsr {
                     break;
             }
         } else if(gpu_screen_recorder_process_output_fd > 0) {
-            char buffer[1024];
             read(gpu_screen_recorder_process_output_fd, buffer, sizeof(buffer));
         }
     }
@@ -2402,85 +2391,15 @@ namespace gsr {
         gpu_screen_recorder_screenshot_process = -1;
     }
 
-    static bool are_all_audio_tracks_available_to_capture(const std::vector<AudioTrack> &audio_tracks) {
-        const auto audio_devices = get_audio_devices();
-        for(const AudioTrack &audio_track : audio_tracks) {
-            for(const std::string &audio_input : audio_track.audio_inputs) {
-                std::string_view audio_track_name(audio_input.c_str());
-                const bool is_app_audio = starts_with(audio_track_name, "app:");
-                if(is_app_audio)
-                    continue;
-
-                if(starts_with(audio_track_name, "device:"))
-                    audio_track_name.remove_prefix(7);
-
-                auto it = std::find_if(audio_devices.begin(), audio_devices.end(), [&](const auto &audio_device) {
-                    return audio_device.name == audio_track_name;
-                });
-                if(it == audio_devices.end()) {
-                    //fprintf(stderr, "Audio not ready\n");
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-
-    static bool is_webcam_available_to_capture(const RecordOptions &record_options) {
-        if(record_options.webcam_source.empty())
-            return true;
-
-        const auto cameras = get_v4l2_devices();
-        for(const GsrCamera &camera : cameras) {
-            if(camera.path == record_options.webcam_source)
-                return true;
-        }
-        return false;
-    }
-
     void Overlay::replay_status_update_status() {
         if(replay_status_update_clock.get_elapsed_time_seconds() < replay_status_update_check_timeout_seconds)
             return;
 
         replay_status_update_clock.restart();
-        update_focused_fullscreen_status();
         update_power_supply_status();
         update_system_startup_status();
     }
 
-    void Overlay::update_focused_fullscreen_status() {
-        if(replay_startup_mode != ReplayStartupMode::TURN_ON_AT_FULLSCREEN)
-            return;
-
-        mgl_context *context = mgl_get_context();
-        Display *display = (Display*)context->connection;
-
-        const bool prev_focused_window_is_fullscreen = focused_window_is_fullscreen;
-        Window focused_window = None;
-
-        focused_window = get_focused_window(display, WindowCaptureType::FOCUSED, false);
-        if(window && focused_window == (Window)window->get_system_handle())
-            return;
-
-        focused_window_is_fullscreen = focused_window != 0 && window_is_fullscreen(display, focused_window);
-
-        if(focused_window_is_fullscreen != prev_focused_window_is_fullscreen) {
-            std::string fullscreen_window_monitor;
-            auto window_monitor = get_monitor_by_window_center(display, focused_window);
-            if(window_monitor.has_value())
-                fullscreen_window_monitor = std::move(window_monitor->name);
-            else
-                fullscreen_window_monitor.clear();
-
-            if(recording_status == RecordingStatus::NONE && focused_window_is_fullscreen) {
-                if(are_all_audio_tracks_available_to_capture(config.replay_config.record_options.audio_tracks_list) && is_webcam_available_to_capture(config.replay_config.record_options))
-                    on_press_start_replay(false, false, fullscreen_window_monitor);
-            } else if(recording_status == RecordingStatus::REPLAY && !focused_window_is_fullscreen) {
-                on_press_start_replay(true, false, fullscreen_window_monitor);
-            }
-        }
-    }
-
     // TODO: Instead of checking power supply status periodically listen to power supply event
     void Overlay::update_power_supply_status() {
         if(replay_startup_mode != ReplayStartupMode::TURN_ON_AT_POWER_SUPPLY_CONNECTED)
diff --git a/src/gui/SettingsPage.cpp b/src/gui/SettingsPage.cpp
index d99f610..3e19134 100644
--- a/src/gui/SettingsPage.cpp
+++ b/src/gui/SettingsPage.cpp
@@ -45,14 +45,13 @@ namespace gsr {
         return result;
     }
 
-    SettingsPage::SettingsPage(Type type, const GsrInfo *gsr_info, Config &config, PageStack *page_stack, bool supports_window_title, bool supports_window_fullscreen_state) :
+    SettingsPage::SettingsPage(Type type, const GsrInfo *gsr_info, Config &config, PageStack *page_stack, bool supports_window_title) :
         StaticPage(mgl::vec2f(get_theme().window_width, get_theme().window_height).floor()),
         type(type),
         config(config),
         gsr_info(gsr_info),
         page_stack(page_stack),
-        supports_window_title(supports_window_title),
-        supports_window_fullscreen_state(supports_window_fullscreen_state)
+        supports_window_title(supports_window_title)
     {
         audio_devices = get_audio_devices();
         application_audio = get_application_audio();
@@ -1137,14 +1136,10 @@ namespace gsr {
     }
 
     std::unique_ptr<RadioButton> SettingsPage::create_start_replay_automatically() {
-        // TODO: Support hyprland (same ones that support getting window title)
-        char fullscreen_text[256];
-        snprintf(fullscreen_text, sizeof(fullscreen_text), TR("Turn on replay when starting a fullscreen application%s"), supports_window_fullscreen_state ? "" : TR(" (X11 applications only)"));
-
         auto radiobutton = std::make_unique<RadioButton>(get_theme().body_font_desc.c_str(), RadioButton::Orientation::VERTICAL);
         radiobutton->add_item(TR("Don't turn on replay automatically"), "dont_turn_on_automatically");
         radiobutton->add_item(TR("Turn on replay when this program starts"), "turn_on_at_system_startup");
-        radiobutton->add_item(fullscreen_text, "turn_on_at_fullscreen");
+        radiobutton->add_item(TR("Turn on replay when starting a game"), "turn_on_at_game_launch");
         radiobutton->add_item(TR("Turn on replay when power supply is connected"), "turn_on_at_power_supply_connected");
         turn_on_replay_automatically_mode_ptr = radiobutton.get();
         return radiobutton;
diff --git a/tools/gsr-game-tracker/main.c b/tools/gsr-game-tracker/main.c
new file mode 100644
index 0000000..585026c
--- /dev/null
+++ b/tools/gsr-game-tracker/main.c
@@ -0,0 +1,249 @@
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/socket.h>
+#include <linux/netlink.h>
+#include <linux/connector.h>
+#include <linux/cn_proc.h>
+
+#define MAX_GAMES        32
+#define ENVIRON_BUF_SIZE (64 * 1024)
+#define CMDLINE_BUF_SIZE 4096
+#define RECV_BUF_SIZE    8192
+
+static pid_t games[MAX_GAMES]; /* 0 = empty slot */
+static int   game_count = 0;
+static char  environ_buf[ENVIRON_BUF_SIZE];
+static char  cmdline_buf[CMDLINE_BUF_SIZE];
+static char  recv_buf[RECV_BUF_SIZE];
+
+static int find_slot_by_pid(pid_t pid) {
+    for (int i = 0; i < MAX_GAMES; i++) {
+        if (games[i] == pid)
+            return i;
+    }
+    return -1;
+}
+
+static int find_free_slot(void) {
+    for (int i = 0; i < MAX_GAMES; i++) {
+        if (!games[i])
+            return i;
+    }
+    return -1;
+}
+
+static void add_game(pid_t pid) {
+    int slot = find_free_slot();
+    if (slot < 0) return;
+    games[slot] = pid;
+    if (game_count++ == 0) {
+        printf("Game launched\n");
+        fflush(stdout);
+    }
+}
+
+static void remove_game(pid_t pid) {
+    int slot = find_slot_by_pid(pid);
+    if (slot < 0) return;
+    games[slot] = 0;
+    if (--game_count == 0) {
+        printf("Game exited\n");
+        fflush(stdout);
+    }
+}
+
+static ssize_t read_file(const char *path, char *buf, size_t size) {
+    int fd = open(path, O_RDONLY);
+    if (fd < 0) return -1;
+    ssize_t n = read(fd, buf, size - 1);
+    close(fd);
+    if (n > 0) buf[n] = '\0';
+    return n;
+}
+
+/* Return pointer to value inside null-separated environ block, or NULL. */
+static const char *env_get(const char *env, ssize_t size, const char *key) {
+    size_t      klen = strlen(key);
+    const char *p    = env;
+    const char *end  = env + size;
+    while (p < end) {
+        if (strncmp(p, key, klen) == 0 && p[klen] == '=')
+            return p + klen + 1;
+        size_t elen = strnlen(p, (size_t)(end - p));
+        p += elen + 1;
+    }
+    return NULL;
+}
+
+static int is_wine_binary(const char *argv0) {
+    const char *base = strrchr(argv0, '/');
+    base = base ? base + 1 : argv0;
+    return strcmp(base, "wine") == 0 ||
+           strcmp(base, "wine64") == 0 ||
+           strcmp(base, "wine-preloader") == 0 ||
+           strcmp(base, "wine64-preloader") == 0;
+}
+
+static int has_game_arch_suffix(const char *argv0) {
+    const char *base = strrchr(argv0, '/');
+    base = base ? base + 1 : argv0;
+    size_t len = strlen(base);
+    static const char *suffixes[] = { ".x86_64", ".x64", ".x86" };
+    for (int i = 0; i < 3; i++) {
+        size_t slen = strlen(suffixes[i]);
+        if (len > slen && strcmp(base + len - slen, suffixes[i]) == 0)
+            return 1;
+    }
+    return 0;
+}
+
+static void check_process(pid_t pid) {
+    if (find_slot_by_pid(pid) >= 0) return;
+
+    char    path[64];
+    ssize_t env_n, cmd_n;
+
+    snprintf(path, sizeof(path), "/proc/%d/environ", pid);
+    env_n = read_file(path, environ_buf, sizeof(environ_buf));
+
+    if (env_n > 0) {
+        const char *appid = env_get(environ_buf, env_n, "SteamAppId");
+        if (!appid) appid = env_get(environ_buf, env_n, "SteamGameId");
+        if (appid && appid[0] >= '1' && appid[0] <= '9') {
+            add_game(pid);
+            return;
+        }
+    }
+
+    snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
+    cmd_n = read_file(path, cmdline_buf, sizeof(cmdline_buf));
+
+    if (cmd_n > 0 && (is_wine_binary(cmdline_buf) || has_game_arch_suffix(cmdline_buf)))
+        add_game(pid);
+}
+
+static void handle_proc_event(const struct proc_event *ev) {
+    switch (ev->what) {
+    case PROC_EVENT_EXEC:
+        check_process(ev->event_data.exec.process_tgid);
+        break;
+    case PROC_EVENT_EXIT:
+        /* Only act when the whole process (not just a thread) exits */
+        if (ev->event_data.exit.process_pid == ev->event_data.exit.process_tgid)
+            remove_game(ev->event_data.exit.process_tgid);
+        break;
+    default:
+        break;
+    }
+}
+
+static void process_netlink_msg(const char *buf, size_t len) {
+    const struct nlmsghdr *nl = (const struct nlmsghdr *)buf;
+    for (; NLMSG_OK(nl, (unsigned int)len); nl = NLMSG_NEXT(nl, len)) {
+        if (nl->nlmsg_type == NLMSG_NOOP  ||
+            nl->nlmsg_type == NLMSG_ERROR ||
+            nl->nlmsg_type == NLMSG_OVERRUN)
+            continue;
+        if (nl->nlmsg_len < NLMSG_HDRLEN + sizeof(struct cn_msg))
+            continue;
+        const struct cn_msg *cn = (const struct cn_msg *)NLMSG_DATA(nl);
+        if (cn->id.idx != CN_IDX_PROC || cn->id.val != CN_VAL_PROC)
+            continue;
+        if (cn->len < sizeof(struct proc_event))
+            continue;
+        handle_proc_event((const struct proc_event *)cn->data);
+    }
+}
+
+static int send_mcast_op(int sock, enum proc_cn_mcast_op op) {
+    /* cn_msg ends with data[0], so we can't place fields after it in a struct.
+     * Use a flat buffer and fill via pointers instead. */
+    char buf[NLMSG_SPACE(sizeof(struct cn_msg) + sizeof(enum proc_cn_mcast_op))];
+    memset(buf, 0, sizeof(buf));
+
+    struct nlmsghdr *nl = (struct nlmsghdr *)buf;
+    nl->nlmsg_len  = sizeof(buf);
+    nl->nlmsg_type = NLMSG_DONE;
+    nl->nlmsg_pid  = (unsigned int)getpid();
+
+    struct cn_msg *cn = (struct cn_msg *)NLMSG_DATA(nl);
+    cn->id.idx = CN_IDX_PROC;
+    cn->id.val = CN_VAL_PROC;
+    cn->len    = sizeof(enum proc_cn_mcast_op);
+    memcpy(cn->data, &op, sizeof(op));
+
+    return send(sock, buf, sizeof(buf), 0) < 0 ? -1 : 0;
+}
+
+static int setup_netlink(void) {
+    int sock = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
+    if (sock < 0) {
+        perror("socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR)");
+        return -1;
+    }
+
+    struct sockaddr_nl sa;
+    memset(&sa, 0, sizeof(sa));
+    sa.nl_family = AF_NETLINK;
+    sa.nl_groups = CN_IDX_PROC;
+    sa.nl_pid    = (unsigned int)getpid();
+
+    if (bind(sock, (struct sockaddr *)&sa, sizeof(sa)) < 0) {
+        perror("bind");
+        close(sock);
+        return -1;
+    }
+
+    if (send_mcast_op(sock, PROC_CN_MCAST_LISTEN) < 0) {
+        perror("send PROC_CN_MCAST_LISTEN");
+        close(sock);
+        return -1;
+    }
+
+    return sock;
+}
+
+static void scan_existing_processes(void) {
+    DIR *d = opendir("/proc");
+    if (!d) return;
+
+    struct dirent *ent;
+    while ((ent = readdir(d)) != NULL) {
+        const char *s = ent->d_name;
+        if (*s < '1' || *s > '9') continue;
+        pid_t pid = 0;
+        for (; *s; s++) {
+            if (*s < '0' || *s > '9') { pid = 0; break; }
+            pid = pid * 10 + (*s - '0');
+        }
+        if (pid > 0) check_process(pid);
+    }
+    closedir(d);
+}
+
+int main(void) {
+    memset(games, 0, sizeof(games));
+
+    int sock = setup_netlink();
+    if (sock < 0) return 1;
+
+    scan_existing_processes();
+
+    for (;;) {
+        ssize_t n = recv(sock, recv_buf, sizeof(recv_buf), 0);
+        if (n < 0) {
+            if (errno == EINTR) continue;
+            perror("recv");
+            break;
+        }
+        process_netlink_msg(recv_buf, (size_t)n);
+    }
+
+    send_mcast_op(sock, PROC_CN_MCAST_IGNORE);
+    close(sock);
+    return 0;
+}
diff --git a/translations/es.txt b/translations/es.txt
index 82d949e..844bc80 100644
--- a/translations/es.txt
+++ b/translations/es.txt
@@ -388,7 +388,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=Tamaño estimado
 Directory to save replays:=Directorio para guardar las repeticiones:
 Replay indicator=Indicador de repetición
 replay=repetición
-Turn on replay when starting a fullscreen application%s=Activar la repetición al iniciar una aplicación a pantalla completa%s
+Turn on replay when starting a game=Activa la repetición al iniciar un juego
 Autostart=Inicio automático
 in RAM=en RAM
 on disk=en disco
diff --git a/translations/fr.txt b/translations/fr.txt
index 1ec62f6..c5a645a 100644
--- a/translations/fr.txt
+++ b/translations/fr.txt
@@ -401,7 +401,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=Taille estimée d
 Directory to save replays:=Répertoire pour sauvegarder les replays
 Replay indicator=Indicateur de replay
 replay=replay
-Turn on replay when starting a fullscreen application%s=Activer le replay lors du lancement d’une application plein écran %s
+Turn on replay when starting a game=Activez la rediffusion au début d'une partie
 Autostart=Démarrage automatique
 in RAM=En RAM
 on disk=Sur le disque
diff --git a/translations/hu.txt b/translations/hu.txt
index 8d7e86b..a833d4d 100644
--- a/translations/hu.txt
+++ b/translations/hu.txt
@@ -393,7 +393,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=Várható videóf
 Directory to save replays:=Visszajátszások mentési mappája:
 Replay indicator=Visszajátszás-jelző
 replay=visszajátszás
-Turn on replay when starting a fullscreen application%s=Visszajátszás bekapcsolása teljes képernyős alkalmazás indításakor%s
+Turn on replay when starting a game=Kapcsolja be az újrajátszást játék indításakor
 Autostart=Automatikus indítás
 in RAM=RAM-ban
 on disk=lemezen
diff --git a/translations/ja.txt b/translations/ja.txt
index 36a077b..35321b6 100644
--- a/translations/ja.txt
+++ b/translations/ja.txt
@@ -405,7 +405,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=推定動画サ
 Directory to save replays:=リプレイの保存先:
 Replay indicator=リプレイインジケータ
 replay=リプレイ
-Turn on replay when starting a fullscreen application%s=フルスクリーンアプリ開始時にリプレイをオンにする%s
+Turn on replay when starting a game=ゲーム開始時にリプレイをオンにする
 Autostart=自動開始
 in RAM=RAM 内
 on disk=ディスク上
diff --git a/translations/ru.txt b/translations/ru.txt
index ecdecc4..c0cb3c2 100644
--- a/translations/ru.txt
+++ b/translations/ru.txt
@@ -388,7 +388,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=Примерны
 # Replay settings
 Directory to save replays:=Каталог для сохранения повторов:
 Replay indicator=Индикатор повтора
-Turn on replay when starting a fullscreen application%s=Включать повтор при запуске полноэкранного приложения%s
+Turn on replay when starting a game=Включите воспроизведение при запуске игры
 Autostart=Автозапуск
 in RAM=в ОЗУ
 on disk=на диске
diff --git a/translations/template.txt b/translations/template.txt
index bae24fa..f6669a2 100644
--- a/translations/template.txt
+++ b/translations/template.txt
@@ -404,7 +404,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=
 Directory to save replays:=
 Replay indicator=
 replay=
-Turn on replay when starting a fullscreen application%s=
+Turn on replay when starting a game=
 Autostart=
 in RAM=
 on disk=
diff --git a/translations/uk.txt b/translations/uk.txt
index 721b1bf..2775cdd 100644
--- a/translations/uk.txt
+++ b/translations/uk.txt
@@ -386,7 +386,7 @@ Estimated video file size per minute (excluding audio): %.2fMB=Приблизн
 # Replay settings
 Directory to save replays:=Каталог для збереження повторів:
 Replay indicator=Індикатор повтору
-Turn on replay when starting a fullscreen application%s=Увімкнути повтор при запуску повноекранної програми%s
+Turn on replay when starting a game=Увімкнути повтор під час початку гри
 Autostart=Автозапуск
 in RAM=в ОЗП
 on disk=на диску