Top 10 Valve Games

1. Half-Life: Counter-StrikeHalf-Life: Counter-Strikehttps://giantbomb.com/wiki/Games/Half_Life_Counter_StrikeOpens wiki page

All versions

2. Team Fortress 2Team Fortress 2https://giantbomb.com/wiki/Games/Team_Fortress_2Opens wiki page

3. PortalPortalhttps://giantbomb.com/wiki/Games/Portal_2007Opens wiki page

4. Half-LifeHalf-Lifehttps://giantbomb.com/wiki/Games/Half_LifeOpens wiki page

5. Half-Life 2Half-Life 2https://giantbomb.com/wiki/Games/Half_Life_2Opens wiki page

6. Left 4 DeadLeft 4 Deadhttps://giantbomb.com/wiki/Games/Left_4_DeadOpens wiki page

7. Portal 2Portal 2https://giantbomb.com/wiki/Games/Portal_2Opens wiki page

8. Left 4 Dead 2Left 4 Dead 2https://giantbomb.com/wiki/Games/Left_4_Dead_2Opens wiki page

9. Day of Defeat: SourceDay of Defeat: Sourcehttps://giantbomb.com/wiki/Games/Day_of_Defeat_SourceOpens wiki page

10. Dota UnderlordsDota Underlordshttps://giantbomb.com/wiki/Games/Dota_UnderlordsOpens wiki page