Life

Life is an abstract discrete world of black squares created by John Conway in 1970. Black squares are birthed when there are three neighbors. Black squares that do not have two or three neighbors die. Life was found to exhibit complex behavior even with simple initial conditions:

The Blinker

The Toad

The Beacon

The Pulsar

The Glider

The Lightweight Spaceship

The Diehard

The R Pentomino