You play as Linus, who has crash landed on Earth. He wants to prove that he really did visit another planet and show his friends some pictures. Your task is to help him get back home by exploring different lands, finding objects, talking to people, and crossing treacherous landscapes while avoiding dangerous creatures.
Gameplay consists of two parts: an adventure mode where you can explore, find objects, and talk to people, and an action mode that's like a side-scrolling platform game. In the action mode, you'll need to cross difficult terrain and evade enemies. You can save your progress at any point by receiving a password, so you can continue later from the same spot.