RetroArch vs ROCKNIX

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.

ROCKNIX is a free, immutable Linux distribution for handheld gaming devices, focused on retro gaming emulation. Installation means downloading a device image, flashing it to an SD card or internal storage, then booting the device. It supports local and remote multiplayer, save states, video filters, in-game touch controls on supported devices, and custom performance and power profiles. Bluetooth audio and controller connections, HDMI and USB audio/video output, and music and video playback are also included. Cloud and LAN synchronization are available through Syncthing and rclone; built-in VPN support covers WireGuard, Tailscale and ZeroTier. ROCKNIX integrates RetroAchievements and automatic game scraping. Achievement support varies by emulator and game and requires an internet connection. Steam and Heroic Games Launcher are supported on arm64. Updates can be installed over the air from EmulationStation or manually with an update tar file. There is no formal support; the project is provided as-is through community help channels. Supported devices are listed in the wiki, and adding a device requires contributed work and direct access to it.