Games like 河神:沉溺之流
Games like 河神:沉溺之流 include Outer Wilds, Poppy Playtime, What Remains of Edith Finch, SOMA, and Inside the Backrooms. We matched them by the tags players give 河神:沉溺之流 on Steam (Action, Adventure, Puzzle, Exploration, and 3D): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Exploration · Adventure · Puzzle

Poppy Playtime
Shared: Puzzle · First-Person · Horror

What Remains of Edith Finch
Shared: Adventure · Atmospheric · Exploration

SOMA
Shared: Atmospheric · Horror · Exploration

Inside the Backrooms
Shared: Puzzle · Adventure · Horror

Firewatch
Shared: Adventure · Atmospheric · First-Person

Little Nightmares II
Shared: Adventure · Puzzle · Horror

Bendy and the Ink Machine
Shared: Puzzle · First-Person · Horror

Sally Face - Episode One
Shared: Puzzle · Adventure · Dark

Little Nightmares
Shared: Adventure · Atmospheric · Puzzle

Amnesia: Rebirth
Shared: Puzzle · First-Person · Adventure

Garten of Banban
Shared: Puzzle · First-Person · Horror

PEAK
Shared: Adventure · Exploration · First-Person

Outlast
Shared: First-Person · Horror · Atmospheric

Amnesia: The Dark Descent
Shared: Puzzle · Horror · Atmospheric

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Action · First-Person

Blue Prince
Shared: Puzzle · Exploration · Adventure

Resident Evil 7 Biohazard
Shared: First-Person · Horror · Action

Stray
Shared: Adventure · Exploration · Atmospheric

Bendy and the Dark Revival
Shared: Action · Adventure · First-Person

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

The Room Two
Shared: Puzzle · Adventure · Atmospheric

The Room
Shared: Puzzle · Adventure · Atmospheric

The Room Three
Shared: Puzzle · Adventure · Atmospheric