This is my first PICO-8 prototype, a port of one of my few LÖVE prototypes, an Asteroids-like space shooter.
The game just starts immediately and resets itself whenever you destroy all the rocks or you hit one of the rocks; win or lose, the result is the same. There's no sound, but it's OK because it's space so it's more realistic.
Controls
z to shoot
left/right to turn
forward to thrust
At the time of the initial version I was trying to get my head around Metatables and figure out a sensible way to do useful inheritance in Lua, so you may find the code either interesting/useful or unnecessarily over-engineered, depending on your disposition.
I'm really enjoying the PICO-8 so far and feel like I could actually finish something for it thanks to its tight constraints, but this probably won't be it. Posting as a sort of hello to the BBS :)