| Crystal Monsters (2008) | 189,763 | 100 |
| Crystal Nexus: Alien Siege (2025) | 0 | 0 |
| Crystal of Atlan (2025) | 6,909,206 | 3,842 |
| Crystal Ortha (2020) | 772,319 | 167 |
| Crystal Plague (2022) | 2,453 | 19 |
| Crystal Project (2022) | 449,543 | 1,463 |
| Crystal Quest (1987) | 665,615 | 613 |
| The Crystal Rainforest (1992) | 873 | 3 |
| Crystal Saga (2011) | 1,047,770 | 193 |
| Crystal Soul Chambers (2024) | 0 | 0 |
| Crystal Story II (2015) | 103,329 | 304 |
| Crystal Story: Dawn of Dusk (2024) | 43,282 | 50 |
| Crystal Story: The Hero and the Evil Witch (2020) | 40,593 | 184 |
| Crystal Survivor (2024) | 4 | 3 |
| Crystal Tales Tactics: Echoes of the Libertas War (2023) | 131 | 2 |
| Crystal Towers 2 (2011) | 33,183 | 24 |
| Crystal Warriors (1991) | 379,877 | 305 |
| Crystal's Castle (2024) | 11,062 | 16 |
| Crystal's Pony Tale (1994) | 423,609 | 272 |
| Crystalis (1990) | 4,190,723 | 3,697 |
| CrystalKeepers (2023) | 60 | 1 |
| Crystalline Bliss (2024) | 0 | 1 |
| Crystals and Curses (2018) | 14 | 1 |
| Crystals of Arborea (1990) | 13,966 | 31 |
| Crystals of Zong (1983) | 4,387 | 11 |
| Crystar (2018) | 3,158,368 | 7,870 |
| Crystorld (2021) | 4,371 | 26 |
| Cryweard (2023) | 7,390 | 12 |
| CS2D (2004) | 4,356,616 | 733 |
| CSD Climbing Sand Dune Cars (2014) | 5,213 | 9 |
| CSI: 3 Dimensions of Murder (2006) | 799,222 | 302 |
| CSI: Crime City (2010) | 13,426 | 7 |
| CSI: Crime Scene Investigation (2003) | 546,355 | 302 |
| CSI: Dark Motives (2004) | 171,390 | 151 |
| CSI: Deadly Intent (2009) | 414,396 | 237 |
| CSI: Deadly Intent - The Hidden Cases (2009) | 7,868 | 5 |
| CSI: Fatal Conspiracy (2010) | 969,901 | 388 |
| CSI: Hard Evidence (2007) | 628,339 | 315 |
| CSI: Miami (2004) | 1,806,889 | 185 |
| CSI: NY (2008) | 70,198 | 49 |
| CSI: Unsolved (2010) | 18,627 | 13 |
| CSR Classics (2013) | 1,413,803 | 927 |
| CSR Racing (2012) | 5,275,316 | 2,431 |
| CSR Racing 2 (2016) | 74,062,301 | 21,169 |
| CT Special Forces (2002) | 780,509 | 722 |
| CT Special Forces: Back to Hell (2003) | 74,783 | 147 |
| CT Special Forces: Fire for Effect (2005) | 236,778 | 365 |
| Cthulhu Dungeon (2022) | 3 | 1 |
| Cthulhu Realms (2016) | 181,698 | 93 |
| Cthulhu Saves Christmas (2019) | 636,959 | 1,121 |
| Cthulhu Saves the World (2010) | 2,043,621 | 1,954 |
| Cthulhu's Reach: Devil Reef (2024) | 10,781 | 34 |
| CTHULOOT (2025) | 472 | 8 |
| Ctrl Alt Ego (2022) | 166,248 | 241 |
| CTU: Marine Sharpshooter (2003) | 134,332 | 70 |
| Cuban Missile Crisis: The Aftermath (2005) | 171,949 | 236 |
| Cube (2001) | 419,137 | 214 |
| Cube (2007) | 65,399,816 | 4,325 |
| Cube & Star: An Arbitrary Love (2014) | 30,694 | 27 |
| Cube 2: Sauerbraten (2004) | 4,120,721 | 1,039 |
| Cube Chaos (2023) | 681,079 | 120 |
| Cube Creator DX (2017) | 1,095,160 | 14 |
| Cube Creator X (2018) | 1,812,925 | 40 |
| Cube Escape: Arles (2015) | 1,647,753 | 389 |
| Cube Escape: Case 23 (2015) | 8,687,434 | 756 |
| Cube Escape: Harvey's Box (2015) | 2,885,297 | 400 |
| Cube Escape: Paradox (2018) | 18,801,927 | 3,267 |
| Cube Escape: Seasons (2015) | 22,219,054 | 907 |
| Cube Escape: The Cave (2017) | 8,322,315 | 664 |
| Cube Escape: The Lake (2015) | 7,989,282 | 560 |
| Cube Escape: The Mill (2015) | 1,540,840 | 392 |
| Cube Escape: Theatre (2016) | 4,636,458 | 335 |
| Cube Full of Mines (2018) | 0 | 0 |
| Cube Gothic (2020) | 611,153 | 32 |
| Cube Guy (2025) | 471,957 | 10 |
