Creatures is a series of artificial life (alife) computer programs. It was created in the mid-1990s by English computer scientist Steve Grand. It was developed by Millennium Interactive. The game is about raising alien creatures known as Norns. This involves teaching them to , helping them explore their world, ing them against other animals, and breeding them. The player can also teach the creatures to speak a language, and can then tell their creature to do something by typing in instructions.