Color a Dinosaur is an electronic coloring book video game for the Nintendo Entertainment System. In the game itself, the player colors various non-threatening dinosaurs by using the provided dinosaur images and palettes. Players can either color using the free form mode or in the automatic mode where they only have to choose a color. The basic colors are either brightly-colored patterns or limited variations on pink or red; giving the game a childish feel to it. However, an extra set of patterns can be reached by pressing the Select button.
This game is intended for younger audiences as no sophisticated features are offered in this game (animation, minigames, etc.) The game's overly simplistic nature, lack of a save feature and bad visuals have made the game a frequent subject of criticism among the gaming community. Tommy Tallarico did the music for this game; which is rather repetitive compared to his later works like Earthworm Jim, although this is largely due to limitations with the NES sound drivers. Dr. Stephen Clarke-Willson was the producer and the educational consultant for this video game; making it one of the few video games produced by a person with either a doctorate or a medical school diploma.