Doom Delta is a mod for GZDoom that aims to bring together many elements from the pre-release iterations of Doom, including (but not limited to) the alpha builds, the press release beta, and Tom Hall's Doom Bible. Elements such as the helmet HUD from early alphas, enemy designs, unique characters, and unused weapon concepts return.

The idea is to take these unused concepts and properly flesh them out, giving them the proper attention and polish they deserve. The end goal is to provide a cohesive experience that provides a fun and enjoyable experience with the aesthetic and feel of the pre-release Doom content.

Yep!

The Joy of Mapping 6: Joy Eternal - E2M3: 'Fractured Facsimilie' by Marian
The Joy of Mapping 6: Joy Eternal - E2M5: 'Looking Glass' by Trotim
The Joy of Mapping 6: Joy Eternal - E2M5: 'Looking Glass' by Trotim
The Joy of Mapping 6: Joy Eternal - E2M6: 'Bloodworks' by Jaxxoon R
The Joy of Mapping 6: Joy Eternal - E2M6: 'Bloodworks' by Jaxxoon R
The Joy of Mapping 6: Joy Eternal - E2M6: 'Bloodworks' by Jaxxoon R
The Joy of Mapping 6: Joy Eternal - E2M6: 'Infestation' by Remmirath
The Joy of Mapping 6: Joy Eternal - E2M6: 'Infestation' by Remmirath
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
The Joy of Mapping 6: Joy Eternal - E2M6: 'Power Plant' by DrPyspy
Nihility: Infinite Teeth - E2M1: 'Dammerung'
Nihility: Infinite Teeth - E2M1: 'Dammerung'
Nihility: Infinite Teeth - E2M1: 'Dammerung'
Nihility: Infinite Teeth - E2M2: 'Speicherung'
Nihility: Infinite Teeth - E2M2: 'Speicherung'
Doom: The Lost Episode - E5M1: 'Logos Anomaly'
Doom: The Lost Episode - E5M3: 'Ominous Lair'
Doom: The Lost Episode - E5M3: 'Ominous Lair'
Doom: The Lost Episode - E5M3: 'Ominous Lair'
Doom: The Lost Episode - E5M4: 'Caroll St. Station'
Doom: The Lost Episode - E5M4: 'Caroll St. Station'
Doom: The Lost Episode - E5M4: 'Caroll St. Station'
Doom: The Lost Episode - E5M4: 'The Mansion'
Doom: The Lost Episode - E5M4: 'The Mansion'
Doom: The Lost Episode - E5M4: 'Twilight Descends'
The Joy of Mapping 6: Joy Eternal - E3M11: 'Erebus Towers' by Osiris Kalev
The Joy of Mapping 6: Joy Eternal - E3M11: 'Erebus Towers' by Osiris Kalev

Looking for a nice mapset to play with Doom Delta? Here are a few mapsets I enjoy that match the aesthetic of Doom Delta:

Here are some miscellaneous mapsets that don't necessarilly match the aesthetic, but I enjoy nonetheless:

Doom Delta v2.5.0 requires GZDoom v4.9.0 and above to run. You will also need a copy of Doom, of course! Either Doom or Doom II will work. You can also take a look at the changelog!

Doom Delta v2.5.0 5.80 MB

Want to make maps for Doom Delta? The mapping starter kit has predefined editor IDs for the new content! NOTE: This is not required for playing Doom Delta. This is to help mappers develop maps for Doom Delta.

Doom Delta Mapping Starter Kit v1.0 8.11 KB