5. Psychonauts
Tim Schaefer has a very imaginative and vivid mind for creating charming worlds with colorful casts of characters. Psychonauts however is arguably the auteurs crowning achievement featuring an alive and wonderful 3D sandbox world for platforming. The summer camp setting offered a myriad of adventuring with an insane amount of collectables but the game really shines when Raz telepathically enters mini-worlds each representing another character's emotional baggage. Its definitely a strange game but coupling that with the already established PS2 platformers (that were much more accessible) including Sly Cooper, Ratchet & Clank, and Jak & Daxter it is understandable most people did not go for Psychonauts too. It was just another case of oversaturation.