Games like Nemunai
Games like Nemunai include The Exit 8, Escape the Backrooms, Scanner Sombre, Layers of Fear (2016), and SOMA. We matched them by the tags players give Nemunai on Steam (Exploration, Action, Psychological Horror, Walking Simulator, and 3D Fighter): closest matches first, and among equally close ones the better-known games.

The Exit 8
Shared: Exploration · Walking Simulator · Puzzle

Escape the Backrooms
Shared: Psychological Horror · Horror · Exploration

Scanner Sombre
Shared: Exploration · Walking Simulator · Psychological Horror

Layers of Fear (2016)
Shared: Psychological Horror · Walking Simulator · Horror

SOMA
Shared: Psychological Horror · Exploration · Horror

What Remains of Edith Finch
Shared: Walking Simulator · Exploration · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Exploration · Horror · Action

The Stanley Parable
Shared: Walking Simulator · Indie · Exploration

Inside the Backrooms
Shared: Psychological Horror · Horror · Puzzle

SILENT HILL 2
Shared: Psychological Horror · Horror · Psychological

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Exploration · Psychological Horror

Poppy Playtime
Shared: Horror · Puzzle · Psychological Horror

[Chillas Art] The Convenience Store
Shared: Psychological Horror · Indie · Horror

SILENT HILL f
Shared: Psychological Horror · Action · Horror

SILENT HILL: Townfall
Shared: Action · Psychological Horror · Exploration

Outer Wilds
Shared: Exploration · Puzzle · Adventure

Mouthwashing
Shared: Psychological Horror · Horror · Indie

Lethal Company
Shared: Exploration · Horror · Psychological Horror

Lorelei and the Laser Eyes
Shared: Exploration · Puzzle · Action

The Beast Inside
Shared: Action · Horror · Psychological Horror

In Sound Mind
Shared: Psychological Horror · Action · Horror

Firewatch
Shared: Walking Simulator · Exploration · Adventure

Still Wakes the Deep
Shared: Psychological Horror · Horror · Walking Simulator

Layers of Fear 2 (2019)
Shared: Psychological Horror · Walking Simulator · Indie