The following games on CheatCodes.com were developed by Valve:
| Game | System |
|---|---|
| Counter Strike Source | PC |
| Half-Life | PC |
| Half-Life 2 | Xbox |
| Half-Life 2: The Orange Box | Xbox 360 |
| Half-Life: Day of Defeat | PC |
| HalfLife 2: Episode One | PC |
| Portal | PC |
| Team Fortress 2 | PC |
