Games like NIDANA
Games like NIDANA include The Beginner's Guide, Firewatch, POOLS, What Remains of Edith Finch, and NaissanceE. We matched them by the tags players give NIDANA on Steam (Walking Simulator, Surreal, Relaxing, Abstract, and Adventure): closest matches first, and among equally close ones the better-known games.

The Beginner's Guide
Shared: Walking Simulator · Atmospheric · First-Person

Firewatch
Shared: Walking Simulator · Adventure · Atmospheric

POOLS
Shared: Walking Simulator · Atmospheric · Surreal

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · Adventure

NaissanceE
Shared: Walking Simulator · Abstract · Atmospheric

Antichamber
Shared: Surreal · First-Person · Abstract

Gone Home
Shared: Walking Simulator · Atmospheric · First-Person

Journey
Shared: Adventure · Atmospheric · Relaxing

Layers of Fear (2016)
Shared: Walking Simulator · Atmospheric · First-Person

The Witness
Shared: First-Person · Walking Simulator · Singleplayer

The Stanley Parable
Shared: Walking Simulator · First-Person · Indie

Manifold Garden
Shared: Surreal · Abstract · First-Person

Scanner Sombre
Shared: Walking Simulator · Adventure · Atmospheric

Viewfinder
Shared: Surreal · Abstract · First-Person

Kairo
Shared: Surreal · Abstract · Atmospheric

ABZU
Shared: Relaxing · Atmospheric · Adventure

The First Tree
Shared: Walking Simulator · Adventure · Atmospheric

Jazzpunk: Director's Cut
Shared: Surreal · Adventure · Indie

Dreamcore
Shared: Walking Simulator · Surreal · First-Person

The Long Dark
Shared: Atmospheric · Adventure · First-Person

GRIS
Shared: Atmospheric · Adventure · Relaxing

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Atmospheric · First-Person

Iron Lung
Shared: Atmospheric · Indie · Adventure

Crime Scene Cleaner
Shared: Relaxing · Singleplayer · First-Person