DinoCity, originally released in Japan as Dinowars Kyōryū Ōkoku e no Daibōken (ダイナウォーズ 恐竜王国への大冒険?, "Dinowars: Adventures in the Dinosaur Kingdom"), is a platform video game developed and published by Irem Corporation for the Super Nintendo Entertainment System.The game is loosely based on the 1991 television American film Adventures in Dinosaur City by Smart Egg Pictures, and borrows many of the film's characters, settings, and basic plot while providing its own unique art direction and style. Initially released in July 1992 for Japanese audiences, the game was later made available in North America the following September. The game centers on Timmy and his friend Jamie, two young children who are accidentally transported to a world resembling prehistoric Earth populated by anthropomorphic dinosaurs. While a device which will allow them to return home exists in this environment, a critical component has been stolen by Mr. Big, leader of a gang of Neanderthals known as The Rockeys, leaving the player to guide Timmy or Jamie to his castle to retrieve it. They are assisted by Rex, a Tyrannosaurus, and Tops, a Protoceratops, each with their own play-styles.