Games like Endless Nightmare
Games like Endless Nightmare include The Talos Principle 2, Portal, Portal 2, Five Nights at Freddy's: Security Breach, and Outer Wilds. We matched them by the tags players give Endless Nightmare on Steam (Exploration, 3D Platformer, Puzzle Platformer, Dungeon Crawler, and Puzzle): closest matches first, and among equally close ones the better-known games.
The Talos Principle 2
Shared: Puzzle · Exploration · Puzzle Platformer
Portal
Shared: Puzzle Platformer · 3D Platformer · Puzzle
Portal 2
Shared: Puzzle · Puzzle Platformer · First-Person
Five Nights at Freddy's: Security Breach
Shared: Exploration · Horror · First-Person
Outer Wilds
Shared: Exploration · Puzzle · Story Rich
Murders on the Yangtze River
Shared: Puzzle · Exploration · Detective
Supraland
Shared: Exploration · Puzzle Platformer · First-Person
The Painscreek Killings
Shared: Exploration · Puzzle · Detective
The Exit 8
Shared: Exploration · Puzzle · Horror
Indiana Jones and the Great Circle
Shared: Exploration · Puzzle · First-Person
Inside the Backrooms
Shared: Puzzle · Horror · Exploration
The Room 4: Old Sins
Shared: Puzzle · Exploration · Horror
Viewfinder
Shared: Puzzle Platformer · Puzzle · First-Person
Riven
Shared: Exploration · Puzzle · First-Person
Blue Prince
Shared: Exploration · Puzzle · First-Person
Hello Neighbor
Shared: Horror · First-Person · 3D Platformer
Escape the Backrooms
Shared: Horror · Exploration · First-Person
ANIMAL WELL
Shared: Exploration · Puzzle Platformer · Puzzle
Myst
Shared: Exploration · Puzzle · First-Person
Superliminal
Shared: Puzzle · First-Person · Exploration
Kona
Shared: Exploration · First-Person · Detective
Firewatch
Shared: Exploration · First-Person · Story Rich
The Unfinished Swan
Shared: Exploration · Puzzle · Puzzle Platformer
Amnesia: Rebirth
Shared: Puzzle · First-Person · Exploration