Game of Life
Conway's automaton with the seed, the density and the edge behaviour all on dials, because watching gliders collide is the entire point.
Conway's Game of Life, with the parts that are normally hardcoded left on the controls.
**X** restarts. **P** opens the menu, which sets:
- how large a square the initial seed is scattered across — a bigger number is a smaller square
- the probability that any given cell starts alive
- the Pac-Man effect, so you can watch what wraps around the edges
Mostly it exists to make still lifes easier to find than they are in an empty grid.