Attract-Mode vs GOG Galaxy

Attract-Mode is a graphical frontend for command-line emulators such as MAME, MESS, and Nestopia. It is intended for arcade cabinets and control by joystick, gamepad, or spin dial, and runs on Windows, OS X, and Linux, including Raspberry Pi and Odroid. Users can import game lists, generate lists from emulator directories, and set launch commands for individual games. The frontend can retrieve missing game details and artwork from TheGamesDB, Progetto-Snaps, and adb.arcadeitalia.net. Controls can be assigned to joystick, keyboard, or mouse inputs, including combinations. A built-in configuration menu has on-screen help, and settings are stored in text files. Layouts can be scripted in Squirrel and customized with themes, animations, and GLSL shaders. It supports media formats supported by FFmpeg and SWF files through gameswf. The feature list also names Steam support and plug-ins for extensions or integration with external programs. Attract-Mode is free and open source under the GNU General Public License v3. Pause functionality for returning to the frontend and resuming an emulator is listed only for Linux and Windows versions.

GOG Galaxy brings game libraries and friends from different gaming platforms into one app for Windows and macOS. It can collect PC and console games, including titles that are not installed, and track achievements, play time, and owned games across connected services. For PC games, it can install and launch titles owned on different platforms. Library tools include filtering, sorting, tagging, changing game visuals, saving views, and editing metadata. Galaxy combines friends lists, online status, activity, and cross-platform chat. Games can enter the library through official or community-made integrations, or be added manually; community integrations are open source, and GOG provides documentation for creating them. Library changes sync between devices, and offline mode is available. GOG says it does not share imported personal data with third parties and removes it from its servers when a platform is disconnected. GOG-specific features include auto-updates, cloud saves, multiplayer, matchmaking, and rollbacks. Other platforms’ client software is needed for their platform-specific features. The app is free with a GOG account.