Uncharted 1 was a fantastic game - I played it after Uncharted 2, so I may not have experienced the depth of the characters the way others have. However, I think Uncharted 1 is the hardest of the three; even on Normal difficulty there were times where I felt ammo-starved because there seem to be a lot more enemies. Also, the climbing sections in Uncharted 1 felt less fluid than in the other two. Also, a tip if you're going for trophies: when I played through, I got no trophies and just figured there weren't any. However, after I finished the game I synced my trophies from my PS3 and saw Uncharted had added in trophy support later, but I didn't unlock any of them. I think you have to start the game, then sync trophies, then go back to the game to unlock them all.