There is no hyperbole here. I mean every word. Arkham Asylum is a perfect game. The pacing is absolute magic. The game goes from one stunning setpiece to another. It's like a long succession of some of the greatest gaming moments, that anyone can undertake. The gameworld, is possibly the best designed and engrossing I've seen in a videogame. Everything, from the stellar combat, the perfect voice acting (Oscar caliber, for real this time) to the staggering amount of polish and content, just reeks of gaming nirvana...you cannot miss this game.
I say that if you don't play Arkham Asylum, you missed this gen. Simple as that.