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From oldest to newest.
- Half-Life1998
- Half-Life: Opposing Force1999 · Standalone expansion
- Counter-Strike2000
- Half-Life: Blue Shift2001 · Standalone expansion
- Half-Life: Decay2001 · Standalone expansion
- Codename: Gordon2004
- Half-Life: Source2004 · Remaster
- Half-Life 22004
- Half-Life 2: Episode One2006 · Standalone expansion
- Peggle Extreme2007
- Half-Life 2: Episode Two2007 · Standalone expansion
- Black Mesa2012 · Remake
- Guard Duty2019
- Half-Life: Alyx2020
