25 wads
| File | Name | Author | Iwad | Demos | Length |
|---|---|---|---|---|---|
| connex | Connex | Ruba | doom | 1 | 0:26 |
| connex2 | connex2 | Ruba | doom2 | 8 | 24:28 |
| conquest | conquest | Jim Hendrickson | doom | 1 | 17:12 |
| consumed | Doom 2's Consumed earth | Various | doom2 | 1 | 52:45 |
| contain | Containment Area v1.1 | J.C. Bengtson (SailorScout) | doom2 | 1 | 25:06 |
| continue | continue | Memfis | doom2 | 10 | 17:29 |
| contsyst | contsyst | Memfis | doom | 4 | 18:07 |
| convertm | convertm | John Hitt | doom | 2 | 6:43 |
| cooldoom | cooldoom | Adam Grommes | doom | 9 | 8:58 |
| coolsub | The cool sub | Christopher MacGregor | doom2 | 1 | 1:07 |
| coopers | coopers | Stephen Wassell | doom | 1 | 15:22 |
| core | core | Barry Ferg | doom | 2 | 12:13 |
| cor_hel4 | cor_hel4 | Jens Nielsen | doom2 | 1 | 15:03 |
| corn | corn | Jason Frierdich | doom | 1 | 9:33 |
| corridor | corridor | Michael Toliver | doom | 4 | 19:25 |
| corruption | Corruption | NinjaDelphox, EvilNeck, Arsinikk | doom2 | 20 | 3:39:45 |
| cortyard | cortyard | Maurice Ormon | doom | 4 | 11:48 |
| cortyr_b | cortyr_b | Michael Kelsey | doom | 1 | 15:21 |
| cosmogenesis | Cosmogenesis | NoReason | doom2 | 46 | 48:07:34 |
| cota1 | cota1 | Ric Blackman & Dead Cat Productions | doom2 | 2 | 1:54 |
| cotl10 | Courage 1.0!!! | MIKEsoft | doom2 | 26 | 54:13 |
| cottongorge | Cotton Gorge (single map) | RedBoule | doom2 | 3 | 22:45 |
| courtesc | courtesc | Lars Thomas Boye | doom2 | 4 | 8:53 |
| courtyrd | courtyrd | Michael Gaitan | doom2 | 2 | 1:24 |
| coyg | coyg | Mark & Nik | doom2 | 2 | 12:23 |