6.0
Half-Life 2: The Black Box

 
6.4
DOTA Underlords

 
6.6
Team Fortress 2: Mann vs Machine

 
8.3
Half-Life: Counter Strike

 
6.0
Left 4 Dead 2: The Sacrifice

 
7.5
Left 4 Dead 2: The Passing

 
8.1
Counter-Strike 1.8

 
9.0
Portal