 "Ghost of Sparta" offers "over 25% more gameplay" than "Chains of Olympus", while adding more enemies on screen and more boss encounters.Development of "Ghost of Sparta" took 23 months to complete.Due to Weerasuriya's schedule at Ready at Dawn, he could not return to direct; Dana Jan, the lead level designer for "Chains of Olympus", became director for "Ghost of Sparta".