Wolfram Elementary Cellular AutomatonView website
"Cellular Automaton (CA) is a collection of cells, with states, on a grid of specified shape that evolves through several discrete time steps according to a set of rules based on the states of neighboring cells. The rules are then applied iteratively for as many time steps as desired." Reference
The user is able to select how many generations the simulation will run for and which ruleset to follow from a pre-established set of rulesets.