MasterBoy is a Game Boy, Sega Master and Game Gear Emulator for the PSP.

It allows you to fully recolor your Game Boy games, not only by selecting one palette for the whole screen, but by recoloring each object on the screen! And you don't need to be a programmer, there's no romhacking (you keep using the original ROM) and it works for nearly all existing games.

It features a skinnable interface with nice effects and quite a lot of options.

You can also listen to your favorite VGM and GYM files with the included music player.