25 wads
| File | Name | Author | Iwad | Demos | Length |
|---|---|---|---|---|---|
| insdeath | insdeath | Maarten Hoogveld | doom2 | 1 | 4:04 |
| insrtion | insrtion | Various | doom2 | 21 | 2:11:06 |
| intent | intent | Jay Townsend | doom2 | 9 | 45:38 |
| intercep | intercep | The Interceptors | doom2 | 30 | 1:45:47 |
| intime | intime | Zoltan Schmidt | doom2 | 22 | 53:01 |
| intrlde | Interlude: A break bet... | Decay, Argent Agent, Biz, Synami | doom2 | 3 | 30:53 |
| intrsect | intrsect | Kevin Eudy | doom | 1 | 10:42 |
| intzone | intzone | Jim Flynn | doom2 | 2 | 23:11 |
| inva_19 | Invasion 1.9 | Paul Fleschute | doom | 13 | 3:42:00 |
| inva2_09b | inva2_09b | Paul Fleschute & Rick Lipsey | doom2 | 63 | 9:36:45 |
| invade1 | invade1 | Andy Chen & Claude Martins | doom | 3 | 40:33 |
| invade2 | invade2 | Andy Chen & Claude Martins | doom | 2 | 1:05:04 |
| invaders | invaders | Dominique Lavergne | doom2 | 6 | 1:56:05 |
| invsiege | invsiege | Andy Chen & Claude Martins | doom2 | 5 | 8:37 |
| ioanomal | Io Anomaly | Exl | doom | 1 | 8:37 |
| ipeitw | ipeitw | Typical Doom Mapper | doom2 | 1 | 0:08 |
| ir | Ice Rage | mArt1And00m3r11339 | doom2 | 1 | 1:56:10 |
| iraik | I'ts Real And It Kills... | enkeli33 | heretic | 3 | 4:36 |
| iraktrst | iraktrst | Ruba | doom2 | 3 | 1:30 |
| irampage | irampage | Aaron | doom2 | 1 | 7:01 |
| irem | irem | Breezeep | doom2 | 4 | 8:17 |
| iroquois | iroquois | Aaron Veenstra | doom2 | 5 | 3:35 |
| isl | In Satan's Lair | Neil Howie | doom2 | 5 | 16:27 |
| istnbul | istnbul | Chris Mead | doom2 | 3 | 19:01 |
| italo | Italo-Doom | dannebubinga & Ribbiks | doom2 | 197 | 13:30:12 |