Games like Autumn Dream
Games like Autumn Dream include Still Wakes the Deep, Firewatch, Mouthwashing, Layers of Fear (2016), and Outlast. We matched them by the tags players give Autumn Dream on Steam (Indie, Horror, Walking Simulator, Adventure, and Cinematic): closest matches first, and among equally close ones the better-known games.

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

Firewatch
Shared: Adventure · Walking Simulator · Indie

Mouthwashing
Shared: Horror · Indie · Psychological Horror

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

Outlast
Shared: Horror · Psychological Horror · Singleplayer

SOMA
Shared: Horror · Psychological Horror · Atmospheric

MiSide
Shared: Horror · Psychological Horror · Singleplayer

Little Nightmares
Shared: Horror · Adventure · Indie

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

The Beast Inside
Shared: Horror · Adventure · Indie

Little Nightmares II
Shared: Horror · Adventure · Singleplayer

ROUTINE
Shared: Psychological Horror · Singleplayer · Cinematic

Blair Witch
Shared: Horror · Indie · Adventure

DEATH STRANDING DIRECTOR'S CUT
Shared: Walking Simulator · Cinematic · Adventure

Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · Adventure

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

Lobotomy Corporation | Monster Management Simulation
Shared: Horror · Psychological Horror · Indie

No, I'm not a Human
Shared: Horror · Indie · Psychological Horror

Fran Bow
Shared: Horror · Psychological Horror · Indie

Neverending Nightmares
Shared: Horror · Indie · Psychological Horror

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

Sally Face - Episode One
Shared: Indie · Horror · Psychological Horror

Visage
Shared: Horror · Psychological Horror · Indie

Welcome to Kowloon
Shared: Horror · Adventure · Walking Simulator