- Classified: France ’44: Deluxe Edition + 2 DLCs
- CLeM
- Clid The Snail
- Clive ‘N’ Wrench
- Clock Tower: Rewind – Build 16699624
- Close to the Sun
- Closer the Distance – v1.0.0+30987
- Cloud Cutter
- Cloudpunk – BuildID 6754726 + City of Ghosts DLC
- Clunky Hero: Game, Art and Music Bundle – v1.0.2 + Bonus Content
- Coal Mining Simulator
- Coastline Flight Simulator
- Cobra Kai 2: Dojos Rising + Nemesis Pack DLC
- Cobra Kai: The Karate Kid Saga Continues
- COCOON
- CoD Black Ops 3 Repack Status
- Code Alkonost: Awakening of Evil
- Code of Princess EX + Multiplayer
- Code Rivals: Robot Programming Battle + Bonus OST
- CODE VEIN: Deluxe Edition, v1.53.61787 + 11 DLCs + Bonus Soundtrack
- Codex Lost – v1.0.3 + Windows 7 Fix
- Coffee Noir: Business Detective Game
- Coffee Shop Tycoon – v1.0 (Release)
- Coffence
- Cold House
- ColdSide + Update 5
- Collector Thief
- Colonization Simulator
- Colony Ship: A Post-Earth Role Playing Game – v1.0.6
- Colony Siege – v1.20.1
- ColorBlend FX: Desaturation – v1.0.0-rc1
- Colossal Cave, v2.0 + VR
- Comanche – v1.0.0.49195
- Combat Mission: Battle for Normandy – Complete, v4.05 (Steam-Matrix/GE4) + 5 DLCs
- Combat Mission: Cold War – v1.02.00
- Combat Mission: Final Blitzkrieg – Complete, v2.11 + Downfall DLC
- Combat Mission: Red Thunder – Complete – v2.13 (Steam-Matrix/GE4) + 2 DLCs
- Command & Conquer 3: Tiberium Wars + Kane’s Wrath (v1.9.2801.21826/v1.02)
- Command & Conquer: Red Alert 3 + Uprising Add-on – v1.12/v1.0
- Command & Conquer: Remastered Collection – v1.153 Build 732159
- Command: Modern Operations – v1.07 Build 1567 + 26 DLCs
- Commander Quest – v1.0.25.704
- Commando Hero 2: First Blood
- Commandos 2: HD Remaster – v1.01
- Commandos 3: HD Remaster – v1.00.045
- Commandos: Origins – Deluxe Edition & Classified Archives, v1.0.0.74101 + 3 DLCs/Bonuses
- Common’hood – v1.0.3
- Company of Crime – v1.0.0.1041
- Company of Heroes 2: Master Collection – v4.0.0.21748 + All DLCs
- Company of Heroes 3 – v1.4.2.21612/Denuvoless