Games like Noosphere
Games like Noosphere include Stray, Blue Prince, Outer Wilds, Little Nightmares, and COCOON. We matched them by the tags players give Noosphere on Steam (Indie, Adventure, Singleplayer, Puzzle, and Exploration): closest matches first, and among equally close ones the better-known games.

Stray
Shared: Adventure · Singleplayer · Exploration

Blue Prince
Shared: Puzzle · Exploration · Singleplayer

Outer Wilds
Shared: Exploration · Adventure · Puzzle

Little Nightmares
Shared: Adventure · Singleplayer · Indie

COCOON
Shared: Adventure · Indie · Puzzle

Chants of Sennaar
Shared: Adventure · Indie · Puzzle

FAR: Lone Sails
Shared: Adventure · Singleplayer · Indie

The Last Campfire
Shared: Adventure · Puzzle · Singleplayer

LIMBO
Shared: Indie · Puzzle · Adventure

Murders on the Yangtze River
Shared: Adventure · Puzzle · Indie

The Room Three
Shared: Adventure · Puzzle · Indie

Firewatch
Shared: Adventure · Singleplayer · Indie

Little Nightmares II
Shared: Adventure · Singleplayer · Puzzle

Seen
Shared: Indie · Singleplayer · Adventure

Rise of the Tomb Raider™
Shared: Adventure · Singleplayer · Exploration

INSIDE
Shared: Indie · Singleplayer · Puzzle Platformer

The Room
Shared: Puzzle · Singleplayer · Adventure

The House of Da Vinci
Shared: Puzzle · Exploration · Singleplayer

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

Tomb Raider Game of the Year
Shared: Adventure · Singleplayer · Third Person

FEZ
Shared: Indie · Puzzle · Exploration

Viewfinder
Shared: Puzzle · Singleplayer · Adventure

The Witness
Shared: Puzzle · Exploration · Singleplayer

OneShot
Shared: Indie · Puzzle · Singleplayer