Unnatural Selection (video game)

Unnatural Selection is a 1993 game for DOS by Maxis, in which the player breeds mutant animals to fight battles. The game has two phases, the first is the breeding phase in which in the player uses various objects and methods (food, drugs, radiation) etc to breed the animals which will fight future battles. The second is the battle phase in which the animals are deployed on the battlefield in order to combat those of a rogue scientist.