25 wads
| File | Name | Author | Iwad | Demos | Length |
|---|---|---|---|---|---|
| ill_engn | illicit engineering | null1024 | doom | 12 | 1:15:52 |
| illumi | Illuminatus v1.1.4 | Cory Scott (NiTROACTiVE) | doom2 | 7 | 32:19 |
| illumi_2018 | Illuminatus v1.0.1 | Cory Scott (NiTROACTiVE) | doom2 | 37 | 6:17:16 |
| ilusory1 | ilusory1 | Brett Librandi | doom | 2 | 17:48 |
| immortal | Immortal | Richard J. Sham | doom2 | 2 | 7:29 |
| imp1 | imp1 | Jon Davis | doom | 1 | 3:03 |
| impact | Impact | greendingbat | doom2 | 2 | 1:40 |
| imparena | imparena | Mike Watson | doom2 | 1 | 5:31 |
| impoffer | impoffer | Cynical | doom2 | 2 | 18:39 |
| impping | impping! - the imp roc... | Various | doom2 | 2 | 35:07 |
| impsden | Imp's Den | volleyvalley | doom2 | 1 | 0:25 |
| impsev2 | impsev2 | gggmork | doom2 | 1 | 5:26 |
| impzone | impzone | John Warren | doom | 10 | 8:23 |
| inad | inad | Carl Buddig | doom2 | 5 | 5:29 |
| incence2 | incence2 | Donnel Enriquez | doom2 | 4 | 2:28 |
| indiana | Indiana Jones | Philip Luhn and John Kugelman | hexen | 1 | 0:17 |
| indifference | indifference | Andy Leaver | doom | 1 | 9:10 |
| industrl | INDUSTRIAL | Magikal | doom2 | 1 | 2:28:07 |
| infantry | infantry | Michael Laakso | doom2 | 1 | 1:04 |
| infbase2 | infbase2 | Gothic | doom2 | 3 | 16:09 |
| infectd2 | infectd2 | Jose Luis Gallardo | doom2 | 1 | 9:48 |
| infectio | Infection | Exl | doom2 | 1 | 9:49 |
| infernos | Infernos | ReX Claussen | doom | 1 | 40:48 |
| infggg1 | infggg1 | gggmork | doom2 | 1 | 5:48 |
| infiltr8 | The Infiltrator | Brett Manzer | doom2 | 1 | 4:54 |