Foreverhood (lost build of unfinished PC ID Tech 1 shooter; 2010)
From The Lost Media Wiki
Foreverhood was to be a story-driven, surreal first-person shooter developed with the ID Tech 1 Engine (which previously fueled games such as Doom and Heretic, along with other indie games like Harmony). The story was about trying to survive on a dying planet, and whether you would destroy the evil or join it. The game had two demos released(1.0 and 1.1), however, they appear to be PWADs (normally additional files for extant games) that barely work unless ran in their specialty versions of the GZDoom engine included. The game's final 2.0 edition was put on hold and later cancelled due to development constraints and the want to do other projects.