rom is a ~5k-line C libretro frontend that plays games in the terminal. It renders native pixels with the kitty graphics protocol in Ghostty or kitty, inline! even in tmux!

Nine platforms: SNES, NES, GB/GBC, GBA, Genesis, PC Engine, N64, Doom/Heretic/Hexen, Wolfenstein. macOS and Linux, MIT.

https://github.com/jhickner/rom