The game picks up after the events of Naughty Dog's Jak 3 (PS2), as the duo once again must defend the world from the effects of the nefarious "dark eco" energy. It's not just on-foot combat though, as the two can take combat to the high skies via aircraft.

High Impact Games, most recently responsible for Ratchet & Clank: Size Matters (PS2, PSP) and Secret Agent Clank (PS2, PSP), is developing the project. The studio was formed a few years back by a number of staffers from Ratchet creator Insomniac.