25 wads
| File | Name | Author | Iwad | Demos | Length |
|---|---|---|---|---|---|
| sodium | Sodium | Jacek Nowak | doom2 | 1 | 1:14 |
| softhell | softhell | Christian Antkow | doom | 1 | 2:36 |
| sol | sol | Nuno Correia | doom | 1 | 1:32 |
| solank | Sol Ank | El Inferno | doom2 | 10 | 1:33:18 |
| soliquid | Solid Liquid | lokbustam257 | doom2 | 3 | 8:53 |
| somemap | I Was Bored And I Made... | Omegalore | doom | 1 | 4:43 |
| sonataind1 | Sonata in D(oom1) | 4shockblast | doom | 2 | 8:52 |
| sonic | sonic | Stephen Clark | doom2 | 5 | 15:02 |
| sonnypak | SONNYPAK.WAD | Sonny Barile | doom2 | 2 | 0:08 |
| sophil | sophil | Philnemba | doom | 14 | 1:19:32 |
| sophobos | sophobos | Michael Lundy | doom | 17 | 54:26 |
| sot | Sign of Torment | Kain D. | doom2 | 14 | 1:32:27 |
| souldout | souldout | Kyle Black & Dave Black | doom2 | 3 | 3:43 |
| sp1 | sp1 | Belial | plutonia | 2 | 8:31 |
| sp2000 | sp2000 | Various | doom | 1 | 13:09 |
| space | Space Station Takeover!! | Douglas Lacher | doom2 | 2 | 2:09 |
| spacelab | spacelab | Keith Hickman | doom2 | 1 | 5:05 |
| spacelb2 | Spacelab | Tanel Pulver | doom2 | 1 | 1:36 |
| spacwars | Doomed Space Wars | Paul Corfiatis | doom2 | 1 | 1:28 |
| spangood | spangood | Unknown | doom | 2 | 5:44 |
| spankme | spankme | Andrew Hulme | doom | 4 | 2:15 |
| sparkle3 | sparkle3 | Sparkle Tom | doom2 | 1 | 2:57 |
| sparta | sparta | Cannonball | doom2 | 3 | 42:18 |
| spawnsq2 | spawnsq2 | Various | doom2 | 55 | 41:41 |
| spbase | spbase | Martin Bazley | doom | 1 | 1:27 |