TIC-80

Very similar and inspired by Pico-8, TIC-80 is a fantasy console for playing tiny games inspired by the 8-bit consoles era. It has never been physically released, but runs as a software on computers like Windows / Mac / Linux and web browsers. The main difference between Pico-8 and TIC-80, besides the fantasy hardware constraints, is that TIC-80 is fully free and opensource, with its code available on Github. They also have a Pro version for faster development, if you like this project, please support them, it's well worth it.

• Display: 240×136 16 colors
• Cartridge: .tic file, max 64kB
• Sound: 4 channel chiptunes
• Code: Lua, Moonscript, Javascript, Wren or Fennel
• Sprites: 256 8×8 foreground sprites, and 256 8×8 background tiles

TIC-80 games are distributed as text files (mostly) with the code, sprites and sounds embedded in them. You can download hundreds of .tic games, music and programs from the TIC-80 official website.