I don't know if anyone noticed this, but Mimic uses Nightmare

Mimic by Daniel Cole

The Mimic Chapter 1 Nightmare Mode (Full Walkthrough)

Mimic (1997) - News - IMDb

The Mimic - OSRS Wiki

Why I think that Nightmare is Mimic1 : r/fnaftheories

Control Nightmare Killed, The Mimic Wiki

Launch Comms: Cosmetic Customization and Unlocks: All You Need to Know About Challenges and Weapon Camos

Nightmare Wraith Template for Dungeons & Dragons Fifth Edition – DMDave Publishing

The Mimic Maps