Planet 51 : The Game is an action driving game with sandbox play that can be described as a kid-friendly version of the Grand Theft Auto series. It is based on the animated movie with the same name. You will play as Lem (the young green alien), Charles 'Chuck' Baker (the stranded astronaut) or R.O.V.E.R. (the mechanical probe), in their joint effort to help the astronaut in getting back to Earth.
The game has three acts, divided into 40 missions. You'll have to race, crash cars, escape from villains, find hidden rocks, transport goods, mow the lawn, etc. Throughout the course of the game, you can unlock rewards and gain achievements by completing missions in a set amount of time or without breaking the car, finding all the secret comic pages, performing jumps through billboards, etc.
The game supports multiplayer action in crashing cars and races for 2 to 4 players, depending on the platform, which is available on Xbox 360.