Which company developed God of War: Chains of Olympus for the PlayStation Portable?

Ready at Dawn developed God of War: Chains of Olympus for the PlayStation Portable.

Chains of Olympus was released in 2008 as a prequel to the original God of War. The game follows Kratos during his service to the Olympian gods and places him in a story involving Persephone, Atlas, and the consequences of his choices.

Ready at Dawn adapted the series' combat, puzzles, and cinematic presentation for Sony's handheld system. Santa Monica Studio, the series' principal developer, supervised the project rather than serving as the game's sole development studio.

The title is sometimes confused with God of War: Ghost of Sparta, another PSP game. Ready at Dawn also developed Ghost of Sparta, which was released in 2010.