Lets take a look at the top PC games:
Action games:
1. Half-Life 2: Episode One 2. Prey 3. Battlefield 2142
Racing games:
1. Need for Speed: Carbon 2. GTR 2 3. TOCA Race Driver 3
RPG games:
1. The Elder Scrolls IV: Oblivion 2. Neverwinter Nights 2 3. Titan Quest
Strategy games:
1. Company of Heroes 2. Warhammer 40,000: Dawn of War - Dark Crusade 3. Medieval II: Total War