Games like Perpetuo
Games like Perpetuo include What Remains of Edith Finch, The Exit 8, Firewatch, POOLS, and Poppy Playtime. We matched them by the tags players give Perpetuo on Steam (Adventure, Psychological Horror, Puzzle, First-Person, and Realistic): closest matches first, and among equally close ones the better-known games.

What Remains of Edith Finch
Shared: Adventure · First-Person · Walking Simulator

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

Firewatch
Shared: Adventure · First-Person · Walking Simulator

POOLS
Shared: Psychological Horror · Walking Simulator · Realistic

Poppy Playtime
Shared: Puzzle · First-Person · Singleplayer

Platform 8
Shared: Adventure · Psychological Horror · Puzzle

Riven
Shared: Adventure · Puzzle · First-Person

Outer Wilds
Shared: Adventure · Exploration · Puzzle

Quern - Undying Thoughts
Shared: Adventure · Puzzle · Walking Simulator

The Witness
Shared: Puzzle · First-Person · Exploration

The Death | Thần Trùng
Shared: Psychological Horror · Puzzle · Adventure

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

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

INFRA
Shared: Puzzle · Adventure · First-Person

Scanner Sombre
Shared: Adventure · Walking Simulator · Psychological Horror

SOMA
Shared: Psychological Horror · First-Person · Exploration

Blue Prince
Shared: Puzzle · Exploration · First-Person

Amnesia: The Dark Descent
Shared: Psychological Horror · Puzzle · First-Person

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

MiSide
Shared: Psychological Horror · First-Person · Singleplayer

Inside the Backrooms
Shared: Puzzle · Psychological Horror · Adventure

Superliminal
Shared: Puzzle · First-Person · Singleplayer

The Room 4: Old Sins
Shared: Puzzle · Adventure · Singleplayer

Still Wakes the Deep
Shared: Psychological Horror · First-Person · Walking Simulator