Flappy Boy (Elemental Code)

How many game developers can say:
"I made a game for the original Gameboy". Not just something that looks like one, but a REAL Gameboy rom.

This is a simple Flappy Bird clone made with GBDK for the original gameboy. 
Made in a week just to test my own mettle.
Thanks to Andres Miranda for the bird, pipes and background art.

The source code is available although it is reaaaaally ugly. Pleases don't look at it