Play GameBoy Colour Titles Wherever Your Phone Goes.

My OldBoy! is a GameBoy Colour emulator with a free version. It offers blazing-fast speeds through ASM coding, save states, ROM patching and more. You’ll want to be conscientious using this emulator, though: it can use a lot of space through duplicate and moved files if you let it, and if your battery dies before you save, you’ll lose your game data, too.