Games like BABBDI
Games like BABBDI include Firewatch, What Remains of Edith Finch, The Long Dark, Layers of Fear (2016), and Fallout 4. We matched them by the tags players give BABBDI on Steam (Exploration, Atmospheric, Walking Simulator, Surreal, and Free to Play): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Atmospheric · Walking Simulator · Exploration

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

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

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

Fallout 4
Shared: Exploration · Atmospheric · Open World

The Witness
Shared: Exploration · First-Person · Atmospheric

POOLS
Shared: Atmospheric · Walking Simulator · Exploration

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

Poppy Playtime
Shared: Free to Play · Horror · First-Person

NaissanceE
Shared: Exploration · Atmospheric · Walking Simulator

SOMA
Shared: Atmospheric · Exploration · Horror

Scanner Sombre
Shared: Exploration · Walking Simulator · Atmospheric

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

Subnautica
Shared: Exploration · Horror · Open World

Fears to Fathom - Woodbury Getaway
Shared: Atmospheric · First-Person · Exploration

The Exit 8
Shared: Exploration · Walking Simulator · Horror

The Forest
Shared: Horror · Exploration · Open World

Slime Rancher
Shared: Exploration · First-Person · Singleplayer

The Park®
Shared: Walking Simulator · Atmospheric · Exploration

Outlast
Shared: Atmospheric · First-Person · Horror

Subnautica 2
Shared: Exploration · Horror · Atmospheric

Valley
Shared: Exploration · First-Person · Atmospheric