Games like OLYEN
Games like OLYEN include Outer Wilds, Firewatch, The Witness, What Remains of Edith Finch, and The Talos Principle. We matched them by the tags players give OLYEN on Steam (Puzzle, Exploration, Adventure, First-Person, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Exploration · Adventure · Puzzle

Firewatch
Shared: Adventure · Atmospheric · Story Rich

The Witness
Shared: Puzzle · Exploration · First-Person

What Remains of Edith Finch
Shared: Atmospheric · Story Rich · Exploration

The Talos Principle
Shared: Puzzle · First-Person · Atmospheric

Blue Prince
Shared: Puzzle · Exploration · First-Person

Return of the Obra Dinn
Shared: Puzzle · Atmospheric · Story Rich

Fallout 4
Shared: Exploration · Adventure · Atmospheric

Riven
Shared: Puzzle · Exploration · Adventure

Quern - Undying Thoughts
Shared: Puzzle · Adventure · Exploration

INFRA
Shared: Puzzle · Exploration · First-Person

Stray
Shared: Adventure · Atmospheric · Exploration

FAR: Lone Sails
Shared: Adventure · Atmospheric · Exploration

The Room
Shared: Puzzle · Atmospheric · Adventure

Antichamber
Shared: Puzzle · First-Person · Exploration

OneShot
Shared: Story Rich · Puzzle · Atmospheric

Big Walk
Shared: Puzzle · Exploration · Adventure

Call of the Sea
Shared: Puzzle · Adventure · First-Person

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

A Story About My Uncle
Shared: Adventure · First-Person · Atmospheric

Chants of Sennaar
Shared: Puzzle · Adventure · Indie

Obduction
Shared: Puzzle · Adventure · Exploration

Hollow Knight
Shared: Exploration · Difficult · Indie

The Last Campfire
Shared: Puzzle · Adventure · Atmospheric