OK for what it's worth here's my top 3 games of 2007.

1) Mass Effect - Pure brilliance and a shock number one for me! Loved the storyline and cinematic feel to it.

2) Bioshock - I thought this would have been my number one but ME pipped it. Still it's immersive and fantastic through and through and was well worth the wait.

3) Stalker - Still playing it and still loving it. Great AI, massive, immersive world, yes it's buggy but still an amazing game.

Other notable mentions I thoroughly enjoyed were Halo 3 (mindless fun), Portal (best ending to any game ever) and HL 2 Ep 2 (more of the same but the same is good).