As part of the pic processor programming course at the Royal Institute of Technology I developed a Tetris Gameboy. The software was written in C and compiled with CC5X. The display was salvaged from an old Nokia 3310, the Joystick was attained from and old Sony Ericsson K750i. The actual pic processor was a 4 kb Microhip 16F690. No casing was ever made however the gameboy is fully playable and quite addictive! Source code is released under the creative common license.