Missingno
by Andrew O'Neil
Multi-system emulator and debugger
About
Missingno is an emulator for the Game Boy, Game Boy Color, Atari VCS (2600), and Sega SG-1000. 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.
Permissions
1 permission weaken the sandbox. Flatsonar asks before installing.
- all devices (/dev): webcams, disks, raw hardware
--device=all - inter-process communication (needed for X11)
--share=ipc - network
--share=network - X11 display, only when Wayland is unavailable
--socket=fallback-x11 - audio
--socket=pulseaudio - Wayland display
--socket=wayland
Who publishes this
The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.
- verified on Flathub: the developer proved they control this app id
publisher:flathub
Maintenance
Recent activity on the upstream repository, or built and reviewed by Flathub.
No staleness signals: recent activity, or built and reviewed by Flathub.