(The computer recipe for the lava blobs is given in Mazes for the Mind. Computer-generated lava lites will decorate our living-room walls in the 21st-Century. The computer recipe for the shell is given in Computers and the Imagination. This simulates the growth of a creature that lived during the time of the dinosaurs.)
Lava Lite based on Cellular Automata (22,593 bytes) 
Lava Lite based on Cellular Automata (48,598 bytes)
Fossil Sea Shell Growth (24,507 bytes)
Fossil Sea Shell Growth (97,028 bytes)
Simulated Cavern (37,498 bytes)
Simulated Cavern (71,330 bytes)
Klein Bottle (39,940 bytes)
Klein Bottle (87,590 bytes) 
