Hey, still talking about this year's games, I am changing my best game.
I picked up Indigo Prophecy (mentioned on the first page, called 'Fahrenheit' in Europe) a few days ago and have to say it's an amazing game. The music, voices and story are beautiful, the gameplay mechanics are innovative (A murder mystery where you play both the murderer and the detectives hunting him down!) and the visuals, although slightly bland, get the job done fine.
Not many people actually bought this game, and it deserved much more attention than it got. If you come across a copy, I urge you to buy it. It was a fantastic game and has heaps of replayability (I managed to get it for $25!). It got two awards from IGN's Games of the Year (Best Adventure Game (PC) and Best Game No-one Played (PS2)). Anyway, enough preaching, my favourite game of '05 is:
Indigo Prophecy (Fahrenheit)
"I hate erecting my tree, my whole family always wants to join in and all the balls fall around the place." - Zotoaster Merry Christmas!