| Cooking Game | zzo38 ◪ | 2003-06-12 |
| 152 |
| Crystal Cities 2 Demo | ZZFreak | 1998-07-22 |
| 92 |
| Crystal Cities | ZZFreak | 1996-07-14 |
| 106 |
| Castle of the Aardvarks | Yapok Jr. | 1996-01-29 |
| 153 |
| Cheezy Short Game | Wervyn ◪ | |
| 87 |
| Catfish Calamity (ver. 1.2) | Verasev ◪ | 2021-09-19 | No reviews. | 70 |
| Caverns of Zeux: the Boardgame | Verasev ◪ | 2020-03-30 | No reviews. | 95 |
| Color Cluster (ver. 1.1b) | Vacek ◪ | 2023-07-21 | No reviews. | 82 |
| Crosswords (ver. 1.0c) | Vacek ◪ | 2022-09-20 | No reviews. | 54 |
| Campaign Against SZZT (ver. 1.01) | Timcomput, Anonymous | 2021-05-15 |
| 108 |
| Confectioner's Recipe, A | ThDPro ◪ | 2013-09-30 |
| 219 |
| Cave Conqueror | ThDPro ◪ | 2013-05-31 | No reviews. | 127 |
| Commander Keen: Heroes Lost | ThDPro ◪ | 2012-12-29 |
| 834 |
| Catnip: The Haze | ThDPro ◪ | 2006-12-06 |
| 82 |
| Castle I (Demo) | steel_dragoon ◪ | 2007-03-07 |
| 61 |
| Civil War 2040 | someone13 ◪ | 2000-03-30 |
| 91 |
| Comfat | Skylark ◪ | 2003-06-30 |
| 73 |
| Carnage | Scott Barnes | 1998-01-03 |
| 105 |
| Cyborg Hunter Demo (ver. 1.2) | Scott Barnes | 1997-04-05 |
| 77 |
| Challenge, The | Scott Barnes | |
| 86 |
| Codename: Snip'a | RoSS ◪ | 2000-10-23 |
| 73 |
| Contra | Robert Scharlau | |
| 74 |
| Caves of Gayana Demo | Robert Scharlau | 1998-11-27 |
| 85 |
| Code White Demo | Qzarko | |
| 74 |
| Columnz | paulguy ◪ | 2006-09-29 |
| 77 |
| Cop Chase | Patrick Santos | |
| 78 |
| City Limits | Pancake ◪ | 2006-05-23 |
| 116 |
| CHIPS Mario | NovaYoshi ◪ | 2018-01-15 |
| 141 |
| Custard's Revenge | NovaYoshi ◪ | 2017-02-25 |
| 57 |
| Custer's Revenge MZX | NovaYoshi ◪ | 2011-00-00 |
| 207 |
| Craziness 2 | nessaja_cat18 ◪ | |
| 72 |
| Craziness | nessaja_cat18 ◪ | |
| 74 |
| Crop Hunter Part I | Nedemai ◪ | 2004-12-20 |
| 65 |
| Castlevania: Guitar Solo of Confusion | Mr. Apol ◪ | 2004-02-17 |
| 100 |
| Crook | Milkbomber | 1998-08-13 |
| 72 |
| Can't 4 | Maxim ◪ | 2000-10-11 |
| 111 |
| Caverns of Zeux Psycho Edition | Mallo | |
| 132 |
| Cheese's Adventure | LogiCow ◪ | 2005-07-03 |
| 212 |
| CannonballZ | LogiCow ◪ | 2002-07-23 |
| 86 |
| Carracer | LogiCow ◪ | 2002-10-27 |
| 95 |
| Crisis in Stuffyou City (ver. Almost 10th Anniversary Edition) | Kuddy / ShloobeR / RoSS / Trev-MUN | 2012-06-16 |
| 116 |
| Captain Cool 2 | KosherPig | 1997-05-27 |
| 83 |
| Captain Cool | KosherPig | 1997-05-27 |
| 87 |
| Cat Game 1: The Chase Demo | KMSpill | 1996-07-29 |
| 84 |
| Catgame Demo | KMSpill | |
| 69 |
| Cry of Light Demo | KKairos ◪ | 2002-07-25 | No reviews. | 80 |
| Completion | KKairos ◪ | 2001-00-00 |
| 74 |
| Canundrums Starring the Inklings (ver. 1.1) | Jiffy66 | 1998-04-14 |
| 92 |
| Call of Caethrath | Jauhis ◪ | 2004-05-06 |
| 358 |
| Crustaceans | Jason H. Steele, John F. O'Meara | 1998-04-29 | No reviews. | 47 |
