Games like DunDun VR
Games like DunDun VR include Firewatch, The Beginner's Guide, What Remains of Edith Finch, POOLS, and Gone Home. We matched them by the tags players give DunDun VR on Steam (Free to Play, Walking Simulator, Singleplayer, Atmospheric, and Surreal): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Walking Simulator · Atmospheric · Singleplayer

The Beginner's Guide
Shared: Walking Simulator · Atmospheric · Singleplayer

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

POOLS
Shared: Walking Simulator · Atmospheric · Singleplayer

Gone Home
Shared: Walking Simulator · Short · Atmospheric

The Witness
Shared: Singleplayer · Atmospheric · Walking Simulator

Samsara Room
Shared: Free to Play · Singleplayer · Atmospheric

Poppy Playtime
Shared: Free to Play · Singleplayer · Atmospheric

Scanner Sombre
Shared: Walking Simulator · Atmospheric · VR

Garten of Banban
Shared: Singleplayer · VR · Atmospheric

Obduction
Shared: VR · Walking Simulator · Surreal

The First Tree
Shared: Walking Simulator · Atmospheric · Singleplayer

Chants of Sennaar
Shared: Singleplayer · Atmospheric · Colorful

ABZU
Shared: Atmospheric · Singleplayer · Colorful

The Stanley Parable
Shared: Walking Simulator · Singleplayer · Indie

Jazzpunk: Director's Cut
Shared: Surreal · Short · Singleplayer

Layers of Fear (2016)
Shared: Walking Simulator · Atmospheric · Singleplayer

Where Winds Meet
Shared: Free to Play · Singleplayer · Atmospheric

NaissanceE
Shared: Walking Simulator · Atmospheric · Surreal

Cairn
Shared: Singleplayer · Atmospheric · Stylized

GRIS
Shared: Atmospheric · Singleplayer · Indie

Journey
Shared: Atmospheric · Walking Simulator · Adventure

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Atmospheric · Singleplayer

The Room
Shared: Singleplayer · Atmospheric · Short