If you're wondering if I've played every Half-Life mod in existence, the answer is YES (but I also review mods from other games).

Title Base game Published Date
Case Closed Half-Life 2001
Counter-Strike Half-Life 2000
Force of Evil Half-Life 2003
Half-Life: Decay Half-Life 2001
Katana Max Payne 2004
Operation: Nova Half-Life 2008
Project: Quantum Leap Half-Life 2002
The Family Max Payne 2003
The Long Night Half-Life 2000
The Victors Return to Castle Wolfenstein 2021