Immersive horror aesthetic.
Nightmare Grotto Steam CD Key How long can you survive? Features Supports global steam leaderboards for Accuracy, Score, and number of kills. Nightmare Grotto Steam CD Key Platform: Steam Release Date: 18/05/2017 Product Description Nightmare Grotto is a horror-themed monster wave shooter for the HTC Vive and Oculus Rift. System Requirements OS: Windows 7 SP1, Windows 8.1 or later or Windows 10 Processor: Intel™ Core™ i5-4590 or AMD FX™ .