4.50 Left 4 Dead 2 (2009)
4.32 Half-Life 2: Episode Two (2007)
4.20 Portal (2007)
4.15 Left 4 Dead (2008)
4.08 Half-Life 2: Episode One (2006)
4.07 Anachronox (2001)
4.04 Thief II: The Metal Age (2000)
4.02 The Orange Box (2007)
3.94 Half-Life 2 (2004)
3.91 Counter-Strike: Source (2004)
3.88 Day of Defeat (2003)
3.85 American McGee's Alice (2000)
3.18 Strange Adventures in Infinite Space (2002)
2.86 John Romero's Daikatana (2000)
2.76 Counter-Strike: Condition Zero (2004)

^*Games must have at least 5 votes to be included.