Missingno

Missingno is an emulator for the Game Boy, Game Boy Color, Atari VCS

(2600), Sega SG-1000, and ColecoVision. It is built around faithful models of the

original hardware:

games look, sound, and behave as they do on the real machines, with

display options that recreate the look of the original LCD and CRT

screens.

The library manages your collection: cover art and metadata are fetched

automatically, play sessions and screenshots are recorded, and saves are

managed and backed up. Homebrew games can be browsed and downloaded from

Homebrew Hub, and physical cartridges read and written with a GBxCart RW.

The integrated debugger works across every supported system, with

disassembly, breakpoints, and live inspection of CPU, video, and audio

state.