Battle.net vs RetroArch

Battle.net is a free game launcher and companion app for Windows, macOS, Android, and iOS. The desktop app gathers games in one library, launches them, and installs games and patches; while running, it can keep them updated automatically. Players can browse the store for games and expansions, send digital gifts, and find free-to-play titles including Overwatch 2 and Call of Duty: Warzone. Games and some in-game purchases may cost extra. Social features include messaging, voice chat, friend connections, and real-time updates. News includes sales, trailers, and patch notes. The mobile app supports shopping, social features, news, and account safety, including chat, friend presence, and friend requests. Users can enable two-factor authentication. Offline mode works only in selected games: downloads and updates need an internet connection, and social features and matchmaking are unavailable offline. World of Warcraft versions and game modes are installed through the desktop app.

RetroArch is a frontend for emulators, game engines, and media players, bringing them under a unified settings system. The RetroArch/Libretro project includes more than 200 cores across those categories. Its menu can group scanned games by system and display thumbnails and animated backgrounds. Common game controllers configure automatically when plugged in, and button actions can also be assigned manually.

Stackable shaders can change rendered graphics or imitate the look of CRT monitors. Built-in netplay supports hosting or joining network gaming sessions, including spectator mode. RetroArch can record gameplay to video files and stream games to Twitch or YouTube. Versions are listed for Windows, Linux, Android, iOS, macOS, and web browsers. RetroArch is free and open source under GPL version 3; the libretro API uses an MIT license. Features differ by platform and store version: the browser edition has lower performance and fewer capabilities than the full version, while Steam lacks Core Updater and thumbnail scraping and offers a selected core set.