Okay so I missed Yesterdays, and here it is.
45. Resident Evil 4
I remember playing this game for the first time, was new to the gameplay, was wondering where the zombies were, and didn't really like it.
I came back to the game about a year later, and couldn't put it down! I now loved the gameplay, and didn't care who or what I was killing at the time! And the first time I got chainsawed, I almost squirted. I actually purposely killed again straight after to see it again! Excellent game, excellent atmosphere, just a huge shame it was followed up by a huge bag of masturbate.
Gears of War WISHES it was this cool!
Will post 44 in a mo