25 wads
| File | Name | Author | Iwad | Demos | Length |
|---|---|---|---|---|---|
| jbat | Jack Builds a Techbase | Xulgonoth & Benchy | doom2 | 6 | 1:27:49 |
| jbl-500 | Wierd World Cave JBL-500 | Roo | doom2 | 5 | 2:18 |
| jb-reces | jb-reces | Joe Becht | doom2 | 15 | 43:07 |
| jcm1 | JCM1.WAD | JC MegaByte | doom | 6 | 35:11 |
| jcm1-16 | jcm1-16.zip | JC MegaByte | doom | 52 | 4:18:42 |
| jcm2-16 | jcm2-16 | JC MegaByte | doom | 45 | 3:35:18 |
| jdtags | JagDogger's Very First... | JagDogger2525 | doom2 | 1 | 0:12 |
| jeff247 | jeff247 | Unknown | doom | 1 | 11:05 |
| jeffhell | jeffhell | Jeff Velten | doom | 2 | 3:23 |
| jenesis | JENESIS | James Paddock | doom2 | 207 | 22:57:03 |
| jerry | #969.WAD | Guy Babin | doom | 3 | 3:38 |
| jesus-x | Jesus DeathMatch | Walter "Daimon" Confalonieri | doom | 4 | 1:28 |
| jhcool | JHCOOL.wad | Unknown | doom2 | 63 | 43:16 |
| jiffybag | Jiffy Bag | Jimmy | doom2 | 65 | 2:19:11 |
| jiggi | jiggi | Ruba | doom2 | 7 | 9:52 |
| jimmy | jimmy | Jim Shrum | doom2 | 3 | 4:48 |
| jimmy_1997 | JIMMY3.WAD | Jimmy Pierce | doom | 1 | 0:43 |
| jimstout | STOUT.WAD | James Stout | doom2 | 3 | 7:35 |
| jl2 | waste of time | Joe Leonard | doom2 | 4 | 4:45 |
| jnnhangr | JNNHangar | joshthenesnerd | doom | 2 | 12:14 |
| jobe | Jobe | Marc Fontaine | doom | 1 | 6:29 |
| joetune | joetune | Various | doom2 | 2 | 3:59 |
| johann1 | JOHANN1.WAD | Greg Cymbalist | doom | 1 | 3:14 |
| joi_lstcv15 | Lost civilization | Jaakko "Jaska" Impola [JOI in maps] | doom2 | 71 | 10:14:20 |
| josfun | josfun.zip | Jan-Ove Saevik | doom | 2 | 5:04 |