Click on squares in the grid to build an organism, then press Start Simulation to see your organism come to life.

Your goal is to create the longest-living organisms possible. Just like in real life, there are some conditions which control whether your organism lives or dies. Read the Rules for more information.

1. Any live cell with fewer than two live neighbors dies, as if caused by under-population.
2. Any live cell with two or three live neighbors lives on to the next generation.
3. Any live cell with more than three live neighbors dies, as if by overcrowding.
4. Any dead cell with exactly three live neighbors becomes a live cell, as if by reproduction.