The stages in PlayStation All-Stars: Battle Royale are important. In fact, they're practically characters themselves; it seems Sony's put just as much work into them, at least. Every stage has its own personality, and the best moments come when two disparate game worlds interact.
Our favorites are the Bioshock Infinite level and the one where the Patapons are fighting that boss from God of War. Hell, that would make a great game on its own, and here it's just the background.
What other world intersections are you looking forward to in PlayStation All-Stars: Battle Royale?