Kratos makes his inaugural appearance on a portable gaming platform in the third instalment of the God of War series. Chains of Olympus serves as a prequel, unfolding its narrative a decade before the events in the original God of War. While retaining the familiar gameplay dynamics of its predecessors, subtle modifications enhance the overall experience. Kratos embarks on a journey through various levels, engaging in relentless combat against foes and formidable bosses, deciphering puzzles based on manipulating boxes, and participating in quick-time events. Throughout his odyssey, he amasses red orbs to fortify his weapons and abilities, secures Gorgon eyeballs to augment his health, and acquires Phoenix feathers to amplify his magical prowess.

The game's controls underwent refinement to harmonize with the reduced button configuration of the PSP. Dodging, for instance, now necessitates the utilization of both shoulder buttons and the analogue stick. The iconic Blades of Chaos, synonymous with the God of War series, make a return, accompanied by an array of new weapons and magical spells such as the Sun Shield, Efreet spell, and Light of Dawn.

The narrative unfolds as the Gods dispatch Kratos to the city of Attica, charging him with the defence against an encroaching Persian army. However, as Morpheus unleashes chaos, Kratos finds himself compelled to harness his formidable powers to once again rescue the world from impending doom.