Soldier of Fortune: Payback is the third installment of the Soldier of Fortune game series. Unlike the previous two Soldier of Fortune games, which were developed by Raven Software utilizing the Quake 2 and Quake 3 engines, Payback was developed by Cauldron HQ, developed with Cauldron's in-house CloakNT engine, used in their previous First Person Shooter game, Chaser.