Metroid Life is based off of the old Conway’s Game of Life, only with metroids.

Metroids live and die based on these simple rules:
–Any live cell with fewer than two live neighbours dies, as if by loneliness.
–Any live cell with more than three live neighbours dies, as if by overcrowding.
–Any live cell with two or three live neighbours lives, unchanged, to the next generation.
–Any dead cell with exactly three live neighbours comes to life.

http://forums.qj.net/f-psp-development-forum-11/t-release-metroid-life-001-134840.html