Entire NES Console Built-In to NES Cartridge: No Blowing Required
If you’ve been looking for a way to carry all of your old NES games around without having to lug around the entire NES console this project will probably flip your lid.
A clever modder built an NES emulator and a display inside of an old NES cartridge. But that’s not all. Aside from NES, this cartridge is also capable of playing Game Boy games, Game Boy Color games and MP3s.