1 week
Arcade Shooter Game, where the player reinforce his ship by building it up through the shards dropping off your enemies. He loses everything if he's hit.
This was done during a "80's fever" game jam of 1 week.
One artist, one programmer, and me. I designed the attacks, the enemies pattern, enemies types, enemies formations, weapons, and the game system.
All of that assuring that the art and code was going in the same direction than the design.