Games like Seybul Tech
Games like Seybul Tech include Mouthwashing, Layers of Fear (2016), Layers of Fear 2 (2019), The Exit 8, and What Remains of Edith Finch. We matched them by the tags players give Seybul Tech on Steam (Psychological Horror, Walking Simulator, Dark, Indie, and Surreal): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Psychological Horror · Horror · Indie

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

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

The Exit 8
Shared: Walking Simulator · Psychological Horror · Exploration

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

Visage
Shared: Psychological Horror · Dark · Horror

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Buckshot Roulette
Shared: Dark · Horror · Indie

SOMA
Shared: Psychological Horror · Horror · Dark

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

POOLS
Shared: Psychological Horror · Walking Simulator · Exploration

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

Psalm 5:9-13
Shared: Psychological Horror · Indie · Walking Simulator

Firewatch
Shared: Walking Simulator · Exploration · Indie

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

Bad Parenting 1: Mr. Red Face
Shared: Psychological Horror · Walking Simulator · Horror

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

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

Garten of Banban
Shared: Psychological Horror · Horror · Singleplayer

Fears to Fathom - Woodbury Getaway
Shared: Psychological Horror · Horror · Walking Simulator

From The Darkness
Shared: Psychological Horror · Dark · Indie

Anemoiapolis: Chapter 1
Shared: Psychological Horror · Horror · Exploration

Fran Bow
Shared: Psychological Horror · Indie · Dark

Fears to Fathom® - Scratch Creek
Shared: Psychological Horror · Horror · Walking Simulator