Valve Software
DeveloperTop48 developed
Games developed
1–12 of 48- Portal: Still Alive (xbox-one) · 2008
- Portal 2 (xbox-one) · 2011
- Left 4 Dead 3 (xbox-one)
- The Orange Box (xbox-360) · 2008
- Portal 2 (xbox-360) · 2011
- Portal (xbox-360) · 2007
- Left 4 Dead 2 (xbox-360) · 2009
- Left 4 Dead (xbox-360) · 2008
- Half-Life 2: Episode Two (xbox-360) · 2007
- Half-Life 2: Episode One (xbox-360) · 2006
- Half-Life 2 (xbox-360) · 2004
- Left 4 Dead 3 (playstation-4)