WildPalm releases GoBoy v1.1, a GameBoy emulator for nokia 7650/3650 phones. With it you can play hundreds of public domain GameBoy and GameBoy Color games.
From WildPalm website:
Features:
Emulates most Gameboy and Gameboy Color roms
Runs games directly from Inbox
Full ZipMan integration to run zipped roms without needing to extract to a file
Source code available
GoBoy currently does not support the following:
Sound support
2-player Link support
Battery support
Save games
These features will be added in future releases of GoBoy
For more info and download:
http://www.wildpalm.co.uk/GoBoy7650.html
Space required: 147Kb
Memory required for playing: 1200Kb