Lost Odyssey is a Japanese role-playing game where the player controls Kaim, an immortal man who has lived for thousand years but lost his memory. He must explore the world with his friends to remember everything and find out who is behind his amnesia. The game features many locations to visit, characters to talk to, and various items to examine and use.
The gameplay in Lost Odyssey differs from other contemporary JRPGs. It uses traditional battle mechanics, with random encounters and separate locations for battles. Character development is based on skill learning, where mortal characters can only learn class-based skills from leveling up, while the immortal character can learn any skill from items.