Source EngineMods
Source Engine
Source Engine 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.
1,445 mods · newest update 29 Aug 2026
- Poisonby BD|RAjANModding Resources / Skyboxesupdated 5 y ago
- mpa112by KaratekaeferModding Resources / Skyboxesupdated 5 y ago
- Very Hard Modby DimeXStandalone Modsupdated 5 y ago
- mpa111by KaratekaeferModding Resources / Skyboxesupdated 5 y ago
- tracksby Kovanov_BZHModding Resources / Vehiclesupdated 7 y ago
- train_interciteby Kovanov_BZHModding Resources / Vehiclesupdated 7 y ago
- train_fretby Kovanov_BZHModding Resources / Vehiclesupdated 7 y ago
- Amethystby komaokcModding Resources / Skyboxesupdated 5 y ago
- strider_attackby lok687Maps / Developer & Test Mapsupdated 5 y ago
- greenby komaokcModding Resources / Skyboxesupdated 5 y ago
- desertby komaokcModding Resources / Skyboxesupdated 17 y ago
- duststreetby k4r01gamexp1Modding Resources / Buildings & Structuresupdated 6 y ago
- Kalt tunnel, Editedby sunspearModding Resources / Buildings & Structuresupdated 6 y ago
- Kalt tower, Editedby sunspearModding Resources / Buildings & Structuresupdated 6 y ago
- Magnavox Televisionby LikoModding Resources / Details & Decorumupdated 6 y ago
- zms_test_mapby EmnuMaps / Developer & Test Mapsupdated 5 y ago
- Mosaic Tileby not kopimiModding Resources / Texturesupdated 7 y ago
- Miramarby BurnfingersModding Resources / Skyboxesupdated 14 y ago
- Halo (from space)by BurnfingersModding Resources / Skyboxesupdated 14 y ago
- Scaffoldingby VarblesModding Resources / Buildings & Structuresupdated 18 y ago
- mpa110by KaratekaeferModding Resources / Skyboxesupdated 18 y ago
- weird skyby komaokcModding Resources / Skyboxesupdated 18 y ago
- snowy hillsby komaokcModding Resources / Skyboxesupdated 18 y ago
- purple beachby komaokcModding Resources / Skyboxesupdated 18 y ago
- lakeskyby komaokcModding Resources / Skyboxesupdated 18 y ago
- New water for CS:Sby M O N S T E RModding Resources / Water & Fluidsupdated 7 y ago
- Spaceby BurnfingersModding Resources / Skyboxesupdated 14 y ago
- Halo Skybox (night)by BurnfingersModding Resources / Skyboxesupdated 14 y ago
- dm_roundedby Teh InspectorMaps / Developer & Test Mapsupdated 5 y ago
- Swat_driveable_truckby HellMapperModding Resources / Vehiclesupdated 6 y ago
- devroom_waterby Groovy PantsMaps / Developer & Test Mapsupdated 7 y ago
- sunsetby komaokcModding Resources / Skyboxesupdated 18 y ago
- Sierra mons Police Prefabsby sierramonModding Resources / NPCs & Scripted Sequencesupdated 6 y ago
- night planetby komaokcModding Resources / Skyboxesupdated 18 y ago
- swirly cloudsby komaokcModding Resources / Skyboxesupdated 18 y ago
- blue skyby komaokcModding Resources / Skyboxesupdated 18 y ago
- chess- and millboardby Inso1984Modding Resources / Details & Decorumupdated 6 y ago
- foggy oceanby komaokcModding Resources / Skyboxesupdated 18 y ago
- SGTC2 Atlantis bridgeby KvikkenModding Resources / Bridgesupdated 6 y ago
- SGTC2 SG-Atlantis BG windowby KvikkenModding Resources / Doors & Windowsupdated 6 y ago
- Stargate Atlantis Doorby KvikkenModding Resources / Doors & Windowsupdated 6 y ago
- SGTC2 Atlantis windowby KvikkenModding Resources / Doors & Windowsupdated 6 y ago
- SGTC2 Atlantis stairsby KvikkenModding Resources / Ladders, Stairs & Elevatoupdated 6 y ago
- bright dayby komaokcModding Resources / Skyboxesupdated 18 y ago
- 2d_puzzleby Inso1984Modding Resources / Details & Decorumupdated 6 y ago
- Bobops Donated Texturesby undeadbobopModding Resources / Packs & Bundlesupdated 6 y ago
- Setting Skyby BurnfingersModding Resources / Skyboxesupdated 14 y ago
- A Swinging Light Packby PigophoneModding Resources / Lights & Enviromentalsupdated 7 y ago
1.4k 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.