CellFighter ScreenSaver - Version 1.2 This screen saver is based on an innovative extension of the Game of Life: two rival swarms of tiny critters wage a non-stop war for the screen space. The behavior of the living armies is highly amusing and unpredictable. The screen saver insensibly adds fresh forces to each army to enliven the show. You can change colors and forms of the critters, choose a speed, an intensity and a scenario of their battle. An interactive version of CellFighter ScreenSaver, the game of the same name, is available for free download too, and you can purchase this game at a discounted price if you register this screen saver.