Half-Life: Opposing Force
Half-Life: Opposing Force mods
A mod changes the game itself. It needs something to load it, it may need other mods first, and it only works on the versions its author built it for.
739 mods · newest update 18 Sep 2026
- Mechanized Death: An Army of Noneby GuestSingle Playerupdated 3 y ago
- Space Disaster, Part 1by DemalitionSingle Playerupdated 3 y ago
- Fallen Chopperby GuestSingle Playerupdated 3 y ago
- Necromancer's Mapsby GuestSingle Playerupdated 3 y ago
- Black Bag Operationsby GuestSingle Playerupdated 3 y ago
- Little Escapeby GuestSingle Playerupdated 3 y ago
- Firing Rangeby GuestSingle Playerupdated 3 y ago
- Friendly Fireby GuestSingle Playerupdated 3 y ago
- EPRST!by GuestSingle Playerupdated 3 y ago
- Underhallsby GuestSingle Playerupdated 3 y ago
- Postalby GuestSingle Playerupdated 3 y ago
- Zombiesby GuestSingle Playerupdated 3 y ago
- J2000by GuestSingle Playerupdated 3 y ago
- You Dieby GuestSingle Playerupdated 3 y ago
- Scientist Rescueby GuestSingle Playerupdated 3 y ago
- Battleby GuestSingle Playerupdated 3 y ago
- Op4_MagicBooks deathmatchby GoontyMaps / Deathmatchupdated 3 y ago
- op4_monoby NOUG4ATMaps / Deathmatchupdated 3 y ago
- dm_weenbobby gibericMapsupdated 3 y ago
- op4_crossfire_strikeby MAXTER_SNAKEMaps / Deathmatchupdated 3 y ago
- Neo-Tokyoby Oxofemple.Maps / Deathmatchupdated 3 y ago
- op4_crossfire_sporesby MAXTER_SNAKEMaps / Deathmatchupdated 3 y ago
- Hazardous Course 2 Coop for Opposing Forceby AEARMaps / Co-Opupdated 3 y ago
- Under The Black Moon Coop For Opposing Forceby AEARMaps / Co-Opupdated 3 y ago
- MiniMicus Coop For Opposing Forceby AEARMaps / Co-Opupdated 3 y ago
- Peace Like Us Coop For opposing forceby AEARMaps / Co-Opupdated 3 y ago
- Big Lolly Coop for Opposing forceby AEARMaps / Co-Opupdated 3 y ago
- Chris Spain's OP4 Rats Packby YellowJelloMaps / Map Packsupdated 2 y ago
- Storage1_OpForby AleKKMaps / Deathmatchupdated 4 y ago
- op4_stalkxby DrogolhusMaps / Deathmatchupdated 18 mo ago
- brazilvsitalyby Cat_bakerMaps / Capture the Flagupdated 4 y ago
- OP4_PATIO | DEATHMATCHby lifeofdesmondMapsupdated 4 y ago
- Opposing Force HUD with P.C.V armor iconby Greeman3123Sprites / HUDupdated 3 y ago
- black mesa lobbyby Ghost2437271Mapsupdated 4 y ago
- op4_oklahoma (tornado dm map)by GoontyMaps / Deathmatchupdated 4 y ago
- Crazydog neighborhoodby Pescepalla20Mapsupdated 4 y ago
- Saving Private Towerby specmanSingle Playerupdated 4 y ago
- Op4Goonty - Deathmatch mapby GoontyMaps / Deathmatchupdated 4 y ago
- Quirkyby DEfusionMaps / Deathmatchupdated 4 y ago
- Torch Grunt Welding Script Prefabby X RaYMaps / Prefabsupdated 4 y ago
- Opposing Force WON HD Menuby s1nk0Menu Backgroundupdated 4 y ago
- Helipad Deathmatchby lifeofdesmondMapsupdated 4 y ago
- op4_mararamoby DrogolhusMaps / Deathmatchupdated 4 y ago
- HD CTF Menu Characters Potraitsby T0bia$Menu Backgroundupdated 5 y ago
- Opposing Force CTF CD WON backgroundby Ghost1432802Menu Backgroundupdated 3 y ago
- Fixed Zombie Color Remap Previewby Mystyle48Resourcesupdated 3 y ago
- opfor_itemtestby Marko-464Mapsupdated 5 y ago
- OF5A4 consistent skyboxby /TheWolfMaps / Other/Miscupdated 3 y ago
739 mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.