| Cycling Manager 3 (2003) | 20,410 | 7 |
| Cycling Manager 4 (2004) | 6,201 | 6 |
| The Cyclist: Tactics (2021) | 79,025 | 169 |
| Cyclo Chambers (2023) | 78,742 | 153 |
| Cyclone (1985) | 2,246,187 | 342 |
| CyClones (1994) | 1,535,168 | 302 |
| CYCO (2022) | 691 | 4 |
| CYGNI: All Guns Blazing (2024) | 1,459,924 | 702 |
| Cygnus Enterprises (2022) | 1,003,384 | 392 |
| Cygnus Pizza Race (2020) | 389 | 28 |
| Cygnus Racing League (2022) | 848 | 67 |
| Cyjin: The Cyborg Ninja (2021) | 300,364 | 122 |
| Cylinder: Puzzles Returned (2024) | 144 | 6 |
| Cylon Attack (1982) | 11,303 | 15 |
| Cylu (1985) | 12,592 | 7 |
| Cymatically Muffed (2020) | 2,235 | 28 |
| Cymut X Mutrobo - The last Cymut (2024) | 77 | 3 |
| Cymut X Mutrobo RPG (2022) | 0 | 0 |
| Cyndy (2019) | 23,810 | 3 |
| Cynoclept: The Game (2017) | 582,900 | 2 |
| CYNOROID FORSAKEN (2022) | 715 | 8 |
| CYNOROID GAIDEN (2020) | 288 | 7 |
| Cynthia: Hidden in the Moonshadow (2022) | 55,580 | 367 |
| Cypher (2012) | 212,450 | 42 |
| Cyraid (1990) | 48,368 | 29 |
| Cyrano (2025) | 0 | 0 |
| Cyril Cyberpunk (1996) | 171,676 | 68 |
| Cyrus IS Chess (1982) | 2,543 | 20 |
| Cyto (2013) | 37,821 | 29 |
| Cytron (1992) | 9,757 | 7 |
| Cytron Masters (1982) | 6,485 | 3 |
| Cytus (2012) | 35,598,550 | 9,291 |
| Cytus Alpha (2019) | 1,151,145 | 355 |
| Cytus II (2018) | 77,711,776 | 25,851 |
| cyubeVR (2018) | 2,409,514 | 1,326 |
| CyVenge (2023) | 234 | 3 |
| Cyvern: The Dragon Weapons (1998) | 124,826 | 147 |
| The Czar is Dead (2024) | 17 | 1 |
