Ubuntu GamePack - UALinux / Technology of the future - already today
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
SteamOS - We've been hard at work to deliver on our promise of a new kind of living room entertainment environment - one that is accessible, powerful and open. In making SteamOS available to you, we're excited to take the next major step towards that goal.
BSNES - bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
Linux Ultimate Edition - Ultimate Edition, first released in December 2006, is a fork of https://alternativeto.
ZSNES - ZSNES is a Super Nintendo Entertainment System emulator.