Lepton Development
Desenvolvedora: Valve
Mais de Valve
- Portal 2 (2011)
- Portal (2007)
- Half-Life 2 (2004)
- Half-Life (1998)
- Half-Life 2: Episode Two (2007)
- Counter-Strike: Global Offensive (2012)
- Left 4 Dead 2 (2009)
- Team Fortress 2 (2007)
- Half-Life 2: Episode One (2006)
- Dota 2 (2013)
- Left 4 Dead (2008)
- Counter-Strike (2000)