Link:
http://goty.gamespy.com/2004/All games below made PC Top 10 GOTY Award and some won additional Genre Awards, which I'll note next to it:
1.HL2 -- PC GOTY & PC Action GOTY
2.WoW -- PC MMORPG GOTY
3.UT 2004 -- PC MultiPlayer GOTY
4.The Sims 2 -- PC Strategy GOTY
5.Rome: Total War
6.Tiger Woods PGA Tour 2005 -- PC Sports GOTY
7.Warhammer 40000: Dawn of War
8.City of Heroes
9.Far Cry
10.Sid Meier's Pirates!
Genre Awards (those that didn't make the Top 10)
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Myst 4: Revelation -- Best PC Adventure Game
Need For Speed: Underground 2 -- Best PC Racing
Special Awards
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Sid Meier's Pirates! -- Old Skool Award
HL2 -- Best Graphics
HL2 -- "Dog" receives Best Character
Far Cry & Doom 3 -- Special Achievement In Graphics
Myst IV: Revelation & World of Warcraft -- Special Achievement in Art Direction
Cosmos game utility for World of WarCraft -- Best Game Utility
Bloom (Technology) -- The 4th Annual Lens Flare Award™ (for gimmicks in a game)
Medal of Honor: Pacific Assault -- Best Music
Thief: Deadly Shadows -- Best Sound
Vampire: The Masquerade: Bloodlines -- Level of the Year for Ocean House Hotel
City Of Heroes -- Best Use of Spandex from the game's CoH Creation System
UT 2004 -- Best Value
Alien Swarm Mod for UT 2004 -- Mod Of The Year
(Runner-ups are all from UT2004: Red Orchestra, Clone Bandits, Carball)
Warhammer 40,000 -- Best Use of License
(Runner-ups for this award are Vampire: Bloodlines & Star Wars: BattleFront)
Painkiller -- Most Pleasant Surprise
Kohan II: Kings of War -- Most Underrated Game
Quake IV -- The 3rd Annual "When It's Done™" Award
Rollercoaster Tycoon 3 -- The Green Banana Award (for buggy games)
(Special Mention for runner-up: Half-Life 2's STEAM process)
Leisure Suit Larry: Magna Cum Laude -- Biggest Disappointment
Spider-Man 2 -- The Bait and Switch Award (for The PC version being different & worse than the Console version w/ no real warning until they played it)
Other Special Awards
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Free Developer Add-On Content -- Trends We Like
Slow Year for Simulations and Single-Player RPGs -- Trends We Hate