New & Popular SourceEngine Game List

Sorted by release date. Updated Nov 4, 2026.

1. 01

   

   Portal 2

   • Action
   • Adventure
   • Shared/SplitScreen

   04/18/2011

   AI analyzed0
2. 02

   

   Alien Swarm

   • Action
   • FreetoPlay
   • Game

   07/19/2010

   AI analyzed0
3. 03

   

   Left 4 Dead

   • Action
   • Zombies
   • Gore

   11/17/2008

   AI analyzed0
4. 04

   

   Portal

   • Action
   • First-Person
   • Mystery

   10/10/2007

   AI analyzed0
5. 05

   

   Half-Life Deathmatch: Source

   • Action
   • PvP
   • Multiplayer

   05/01/2006

   AI analyzed0
6. 06

   

   Day of Defeat: Source

   • Action
   • Class-Based
   • Team-Based

   09/26/2005

   AI analyzed0
7. 07

   

   Half-Life 2: Deathmatch

   • Action
   • Team-Based
   • PvP

   11/30/2004

   AI analyzed0
8. 08

   

   Half-Life 2

   • Action
   • First-Person
   • War

   11/16/2004

   AI analyzed0
9. 09

   

   Counter-Strike: Source

   • Action
   • Team-Based
   • PvP

   11/01/2004

   AI analyzed0