Wa-Tor for Windows

Wa-Tor for Windows is a population ecology simulation game, based on a random model. Wa-Tor is a toroidal (doughnut-shaped) planet completely covered by an ocean and populated by two species. You pit hungry sharks against tasty fish and see who comes out on top. The populations may fluctuate in a similar manner to the Lotka-Volterra model, continuing for hundreds of generations, or the populations may go extinct in a very short time, depending on the initial parameters and subsequent random events. The population may also become chaotic for a time, then return to relatively regular fluctuations.