As of this build period, Nightmare of Decay is characterized as a "retro-style" first-person survival horror game that pays homage to early Resident Evil titles.
It followed build 8826240 (v1.14) and preceded v1.15, which addressed blank screen issues. Key Game Features download-nightmare-of-decay-build-8829172
The game includes a standard campaign (approx. 2.5 hours), a Dungeon Escape roguelike mode, and a Horde Mode . As of this build period, Nightmare of Decay
For a look at the survival horror gameplay and retro foundation of this title: As of this build period