John GBA is an emulator of classic Game Boy Advance and Game Boy Color games. It is an open source app that allows you to play classic Game Boy Advance and Game Boy Color games on your Android or iOS device. It has a lot of features, such as smooth sound and music, high resolution, supports cheat codes, save states, fast forward, and more. It also offers support for wireless link play. It is a great way to enjoy your favorite classic titles without having to carry around your old console.
Discontinued The project is no longer being developed. The latest version, 1.8.0 beta 3, released in October 2005, can still be downloaded from FileHippo.