Planet 51: The Game is an action driving game with some sandbox play, similar to Grand Theft Auto for kids. 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 get 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, and more. Throughout the game, you can unlock rewards and achievements by completing missions quickly or without breaking the car, finding all secret comic pages, performing jumps through billboards, etc.