God of War: Chains of Olympus is the first God of War game made for the PSP and is an original game. The game promises to bring the epic scale of previous God of War games to a portable console, including over-the top combat and boss fights. Chains of Olympus is an original story which is a prequel set in the time between the murder of Kratos' family and the events of the first PS2 game that will flesh out the backstory of the main series of games.
The game is being develped by Ready at Dawn, the studio highly praised for Daxter (their adaptation of the Jax & Daxter series to the PSP). In addition, the same audio team and voice actors are being used for this game as for the console series. The developer has also stated that the game will feature unlockable content similar to the PS2 games, and will be roughly the same length.