Ratatouille is based on the Pixar film of the same name. The version by Asobo Studio is, like other versions, a 3D platform game, but has its own design, levels and missions.
The game follows the plot of the film only loosely, but has the main voice cast from the movie reprising their roles. The player controls Remy, a rat with a refined sense of taste. When Remy finds himself in Paris near the restaurant of the famous deceased chef Gusteau, he works on making his dream of becoming a chef himself come true, while helping out his fellow rats to procure food.
Gameplay involves jumping and double-jumping, swinging along poles, balancing on ropes, crawling on certain walls and defending himself with tail swipes or by using spoons as weapons. The player can also engage his keen sense of smell, which displays the path to the next goal or objective. Some sequences involve evading guards by hiding out of sight until their attention wanes. Mini-games are a large part of the game, many of which involve cooking, with Remy having to pick ingredients or peel potatoes.
There are some optional bonus missions, taking the form of dream sequences, in which Remy navigates landscapes made of foodstuffs. All levels include many collectibles, such as up to 100 stars to collect. Special items in certain levels include batteries, darts or lightbulbs. Collecting all of a certain kind of item in an area awards bonus points, which can be spent in Gusteau's shop to unlock bonuses, including various kinds of artwork and the possibility to play the mini-games outside the main game, in both single and multiplayer modes.
Ratatouille was released for the Gamecube on 1 August 2007.