1/ Castlevania. Great single player game with great graphics and brilliant level design plus its a sold 20 hour single player experiance, 40 hours if you play again on the hardest difficulty which is easy once your fully levelled up.
2 / Vanquish. Stunning game full of action and great gameplay and combat. Only problem with the game is its a bit short
3/ Enslaved. Havn't played the game yet.