Trog is an arcade game developed by Midway Games and released in 1990. In the game, players control one of four dinosaurs and must collect eggs onscreen while being pursued by cavemen called "trog" (named after the word troglodyte) The game supports up to four players at once. Ports of the game for the Nintendo Entertainment System and DOS were released by Acclaim Entertainment in 1991. These versions reduce the number of simultaneous players to two.