Quake 0

Quake 0 is a 2-D vector platform shooter for up to 5 players. The level is a fixed 30×12 grid of one-way platforms floating in empty space — the whole of it is always on screen, scaled to fit with a margin around it; there is no camera and no scrolling. Run and jump between the platforms, press down to drop through the one you are standing on, and fire automatically at whoever is nearest. Knock a rival off the edge and everyone else scores.