From homepage; "Short Introducion: Create a 2D shooter of any kind, this could be a horizontal, vertical or 360° shooter. Be innovative, do not only create spaceshooters :-) By "2D shooter" we do not mean games like "Space Invaders", there should be at least some kind of action on the screen. No "real 3D" stuff!

Category 1: Gameboy Classic, Gameboy Color, Intellivision, Neo Geo Pocket Classic, Neo Geo Pocket Color, Odyssey 2, Wonderswan Classic, Wonderswan Color, Game Gear, NES, Master System, Pokemon Mini, Watara Supervision

Category 2: Gameboy Advance, Megadrive, GP32, PC Engine, SNES, Dreamcast, Arcade Hardware (NeoGeo, NeoGeo CD, CPS1, Sega 32x)"