Audiosurf
When I bought Audiosurf I thought it would keep me busy for a short while. Little did I know that it would become the game that I've played the most this year. It's got three different difficulty levels each with their own high score tables for every song that has ever been played in Audiosurf. So if you feel like relaxing then you can play a casual character and so forth.
There's just so much to do, so many records to beat... world records, nearby (South African) records and friend records. All nicely listed so that you can see how well you did in a song.
The best of course is that I can play a game with my kind of music playing in the background.
I've played many great games this year and Audiosurf is by far the most addictive.
Rating: 8.6