Scenarios

plays 6731 / votes 4

Adventure on every axis.

plays 3848 / votes 1

Fun in red and blue.

plays 6840 / votes 0

Not really invisible, but semi-visible isn't as catchy.

plays 3012 / votes 0

Use your ninja moves.

plays 11331 / votes 2

Destroy 100 little asteroids without getting hit!

plays 3018 / votes 0

A game of Chance

plays 5047 / votes 1

The firing squad synchronisation problem using cellular automata