- Catherine Classic
- Centralia: Homecoming – v1.8
- Champions of Anteria – v1.7.499537.X + All DLCs
- CHAOS;CHILD
- Chasing Dead
- Chef: A Restaurant Tycoon Game
- Chess Ultra – v1.6
- Chicken Police
- Children of Morta – v1.1.70.2 (768117) + Paws & Claws DLC
- Children of Zodiarcs
- Chinese Paladin: Sword and Fairy 6
- Chronos: Before the Ashes – v258941
- CHUCHEL
- Citadel: Forged with Fire – v32568
- Cities XXL
- Cities: Skylines – Deluxe Edition – v1.13.0-f7 + All DLCs
- Citizens of Earth
- Citizens of Space
- Citizens Unite!: Earth x Space
- City Patrol: Police
- Close to the Sun
- Cloudpunk – Cockpit Update (Oct 27, 2020)/BuildID 5760339
- Cobra Kai: The Karate Kid Saga Continues
- CoD Black Ops 3 Repack Status
- Code of Princess EX + Multiplayer
- Code Vein – v1.01.86038 + 4 DLCs + Multiplayer
- Coffence
- ColdSide + Update 5
- Colony Siege – v1.20.1
- 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
- Commandos 2: HD Remaster – v1.01
- Company of Crime – v1.0.0.1041
- Company of Heroes 2: Master Collection – v4.0.0.21748 + All DLCs
- Conan Exiles – v230672/25565 (Jun 21, 2020) + All DLCs
- Conan Unconquered – v1.143.703634 (Belit’s Fury)
- Conarium – v1.0.0.3
- Conception II: Children of the Seven Stars
- Conglomerate 451 – v1.5.0
- Congo
- Constructor HD – v25.04.2018 + All DLCs
- Constructor Plus
- Contra: Rogue Corps
- CONTROL: Ultimate Edition – v1.12 (Steam) + 2 DLCs + Unlockers
- Cook, Serve, Delicious! 3?!
- Corpse Party: Blood Drive
- Corruption 2029
- Cosmonautica: A Space Trading Adventure
- Cossacks 3 – v1.0.0.46 (Update 3)