Fayceless on 21 June 2008
1. City Building/similar sim games (Sim City, Caesar, Roller Coaster Tycoon, etc.)
2. Strategy (any kind! RTS, 4X, SRPG)
3. RPG
4. 2D Platforming
Adventure and Racing (arcade and kart) are also high on the list.
Least favorite:
Fighting, with the big exception of Smash Bros.