Shadow of the Colossus rocks.  I just finished my first play-through on normal mode the other day, and I'm working on hard mode and the time attack levels to unlock some extra stuff.  The overworld is quite unique - their artists created genuinely breathtaking landscapes, with sweeping plains, windy deserts, dark forests, towering seaside cliffs, and lots of nooks and crannies to explore.  The Colossi themselves are a blast to combat.  Some are big and slow, others are smaller and quicker, and there are a couple of airborne types that take you for crazy roller coaster rides. 
 
The ending kinda twists your mind, too.  I found it to be well worth playing.
		 
		
		
		
		
		
		
			
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