SPORE is a simulation game in which players guide a species through different stages of evolution from its beginnings as a single cell organism to development as space-exploring creatures. Players can modify and customize their creatures by adapting various traits such as wings, horns, or feet. Biological traits are gained through interactions and battles --represented by turn-based combat -- with other rival species. Combat can include raiding and attacking non-threatening creatures/tribes with spears, launching nuclear missiles on rival cities, or engaging in laser fire with spaceships and planets. Creatures occasionally emit colored puffs/plumes of blood when defeated or consumed. Certain species occasionally throw-up food.