Psychonauts

At a summer camp for up-and-coming psychics, a young boy with an unusually high level of psychic ability inexplicably shows up. The boy, named Raz, is allowed to stay at the camp until his father comes to pick him up, but his arrival coincides with very strange circumstances. Soon, evidence that someone is psychically tampering with the campers' minds reveals itself, and Raz is the only one who can stop it. Raz must project himself into the psyches of several different people in order to figure out what is going on and who is behind the recent occurrences.

Psychonauts is a 3D platform game with a rather unorthodox style. The characters' inner worlds are the game's levels. Each world reflects the personality of the person whose psyche it represents, often resulting in unique, surreal creations, and influencing the gameplay style. For example, the psyche of a giant lungfish is presented as a large city populated by fish people, in which Raz himself becomes a giant monster who can destroy entire buildings; the psyche of a mental patient is a huge board game, where Raz has to command armies in order to defeat Napoleon, etc.