Games like In & Out
Games like In & Out include Outer Wilds, COCOON, Riven, The Unfinished Swan, and Viewfinder. We matched them by the tags players give In & Out on Steam (Adventure, Casual, Puzzle, Trivia, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Adventure · Exploration · Puzzle

COCOON
Shared: Adventure · Puzzle · Exploration

Riven
Shared: Adventure · Puzzle · Exploration

The Unfinished Swan
Shared: Adventure · Puzzle · Exploration

Viewfinder
Shared: Puzzle · Puzzle Platformer · Adventure

Firewatch
Shared: Adventure · First-Person · Atmospheric

Moncage
Shared: Casual · Puzzle · Adventure

The Room
Shared: Puzzle · Adventure · Mystery

Blue Prince
Shared: Puzzle · Exploration · Adventure

The Witness
Shared: Puzzle · Exploration · First-Person

Big Walk
Shared: Puzzle · Adventure · Exploration

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

FEZ
Shared: Puzzle · Adventure · Exploration

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

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

Monument Valley
Shared: Adventure · Puzzle · Casual

Stray
Shared: Adventure · Exploration · Puzzle

The Exit 8
Shared: Puzzle · Exploration · First-Person

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

Obduction
Shared: Adventure · Puzzle · Exploration

Supraland
Shared: Adventure · Puzzle Platformer · Exploration

PEAK
Shared: Adventure · Exploration · First-Person

Quern - Undying Thoughts
Shared: Adventure · Puzzle · Exploration

FAR: Lone Sails
Shared: Adventure · Exploration · Puzzle