Features a new world--twice as big as the world in Creatures 2; 5 separate environments, each with its own ecology; A physics model supports Features a new world--twice as big as the world in Creatures 2; 5 separate environments, each with its own ecology; A physics model supports slopes, gravity, friction, aerodynamics, and momentum; New interface with enhanced creature communication; A new line-up of creature machines, plants, and animals.