Multiplayer Game of the Year (best game to play with more than yourself): Mario Party 5
Sports Game of the Year (Simulation) (Examples: Madden, the ESPN series, Tiger Woods): NFL 2K4
Sports Game of the Year (Action) (Examples: Tony Hawk Underground and the like): Tony Hawk Underground
Racing Game of the Year (Project Gotham Racing 2, Need For Speed Underground): Project Gothem Racing 2
Fighting Game of the Year (Wrestling, Virtua Fighter 4: Evolution, Soul Calibur 2): Soul Calibur 2
RPG of the Year (KOTOR, Final Fantasy X-2, Mario and Luigi): KOTOR
Platform Game of the Year (Jak II, Rachet and Clank: Going Commando): Jak II
First Person Game of the Year (all shooters, Deus Ex: Invisible War, etc.): Rainbow Six 3
Action Game of the Year (Pretty much everything else. Manhunt, Max Payne 2, Prince of Persia, Crimson Skies): Crimson Skies
Advenure Game of the Year (Beyond Good and Evil, Wind Waker): Wind Waker
Doesn't fit into any other category Game of the Year (Mario Party, Midway Arcade Treasures, Pac Man vs., Sims): Mario Party 5
Most Innovative Game of the Year: Manhunt
*New Category* Online Game of the Year (Socom 2, Rainbow Six 3, Crimson Skies): Project Gothem Racing 2
Worst Game of the Year: Ghost Reacon: Island Thunder
Most Dissapointing Game of the Year: Raw 2
Most Surprising (surprisingly good that is) Game of the Year: ESPN Hockey 2K4
PC Game of the Year: n/a
GBA Game of the Year: n/a
XBox Game of the Year: KOTOR
Gamecube Game of the Year: Mario Party 5
PS2 Game of the Year: Manhunt
Console of the Year: X-Box
Game of the Year: KOTOR