Well the first time a game "wowed" me was also the game that made gaming a hobby. It was my birthday, I was given an XboX and 2 games by my family and my Dad brought his projector to my Mum's house. The 2 games were Halo CE and Crash Bandicoot or Sonic Heroes. Anyway, I played Halo first, wasn't very good at it but once I got to the second level and stepped out of the escape pod and saw "Halo" across my entire wall with the projector it was like I was Master Chief, I felt amazing and Halo has been my favorite game ever since and I've been a heavy gamer sinse then. Many games have wowed me since (Spec Ops, Oblivion, Fallout 3, Dark Souls, Resident Evil 6, Far Cry Instincts, Splinter Cell Chaos Theory and more) but none in the same way that Halo did.