This is a particle simulation with different types of particles. Sort of like powder game, but not as good. The point is to see cool things on the screen. I had it set up as a screen saver for a while, but I've reverted it back to windowed mode for compatibility with modern displays.
Controls:
Creation
Ctrl+A - Toggle automatic mode (essentially mashes the keyboard randomly, on by default)
Left Click - Add rocks
Right Click - Draw ground
Plus - Add rocks
Minus - Remove rocks
Escape - Quit
Movement
E - Explode, spawn in 20-rock clusters
M - Move, apply random velocity
Particle States
G - Gas
L - Liquid
S - Solid
P - Plasma
R - Random
A - Alive
I - Ice
Effects
T - Trails on/off
D - Darken, prints a grey overlay to darken trails old trails
C - Color mode, switches to one of 16 random draw modes (T resets to drawmode 13)