Ghost of Sparta tops Chains of Olympus in every way imaginable. Pick this game up for sure if you own a PSP!
GRAPHICS: Overall, the game looks crisper and has a better atmosphere than Chains of Olympus. The visuals are fantastic. This is easily one of the best looking games that there is for the PSP system.
GAMEPLAY: Basically the same as Chains of Olympus, but with more platforming, less puzzles, and bigger bosses. Combat is more innovative now that there are more weapons, powers, and upgrades in the game. Two or three specific moments were jaw-dropping and full of juicyness, like Captain Soap MacTavish's accent. The game is also much longer than Chains of Olympus. I believe it lasted me anywhere from 18-20 hours.
AUDIO/SOUNDTRACK: Better than Chains of Olympus? I dont know. They sounded pretty similar to me. The game sounds great. Special effects and ambience is all there, topped with a delicious serving of great voiceacting.
ONLINE: N/A
VALUE: Must-Have
OVERALL
Pros: Fantastic visuals and atmosphere, great audio, lots of platforming and challenging bosses, pure God of War action, long story
Cons: None