Ashes series - 2063, Dead Man Walking, and Afterglow
Get the stand alone version in the files section.
Tips: Search for scrap in trash. Take the lantern battery and radio at the hubs.
https://www.moddb.com/mods/ashes-2063
https://forum.zdoom.org/viewtopic.php?t=47573
Other files:
Ashes Weapon Pack and Ashes Monster Pack - Use with other maps. Entering 'summon blursphere' in the console gives weapon upgrade kits.
Sterile versions - No story - Maps only - Use with gameplay mods. The first episode Sterile version is at the forum post linked above.