Press s to go trough various pixel shapes, Press c to go trough various contents (for Pong, use q-w to play)
Left click and drag to rotate view, right click and grad to zoom in, middle click to look around

Shapes are: BoxFold, Cone, Stick, Umbrella, Flower, Wings. Contents are: Noise, Counting animation, Pong, Random, Reset
To view this content, you need to install Java from java.com

Source code: fan13