Planet 51: The Game is a video-game based on the same movie about the young Alien Lemb and the astronaut Chuck going through different missions to send Chuck back to Earth.Planet 51: The Game is a video-game based on the same movie about the young Alien Lemb and the astronaut Chuck going through different missions to send Chuck back to Earth.Planet 51: The Game is a video-game based on the same movie about the young Alien Lemb and the astronaut Chuck going through different missions to send Chuck back to Earth.