Games like Keystone Library
Games like Keystone Library include TOEM: A Photo Adventure, Carto, DAVE THE DIVER, Is This Seat Taken?, and Beacon Pines. We matched them by the tags players give Keystone Library on Steam (Cozy, Typing, Exploration, Puzzle, and Relaxing): closest matches first, and among equally close ones the better-known games.

TOEM: A Photo Adventure
Shared: Cozy · Puzzle · Exploration

Carto
Shared: Exploration · Puzzle · Relaxing

DAVE THE DIVER
Shared: Exploration · Casual · Relaxing

Is This Seat Taken?
Shared: Puzzle · Cozy · Relaxing

Beacon Pines
Shared: Cozy · Exploration · Visual Novel

Hello Kitty Island Adventure
Shared: Cozy · Exploration · Casual

A Little to the Left
Shared: Puzzle · Relaxing · Casual

Sanfu
Shared: Puzzle · 2D · Hand-drawn

Gorogoa
Shared: Puzzle · Hand-drawn · Casual

GRIS
Shared: Hand-drawn · Relaxing · Puzzle

Whisper of the House
Shared: Relaxing · Cozy · Puzzle

The Artisan of Glimmith
Shared: Cozy · Puzzle · Exploration

Assemble with Care
Shared: Puzzle · Casual · Relaxing

Phonopolis
Shared: Puzzle · Cozy · Relaxing

Big Walk
Shared: Exploration · Puzzle · Relaxing

Strange Horticulture
Shared: Cozy · Puzzle · Exploration

Monument Valley
Shared: Puzzle · Relaxing · Exploration

WILL: A Wonderful World / WILL:美好世界
Shared: Puzzle · Exploration · RPG

OneShot
Shared: Puzzle · Story Rich · Exploration

Cats Organized Neatly
Shared: Cozy · Puzzle · Relaxing

LEGO® Builder's Journey
Shared: Relaxing · Cozy · Puzzle

Hidden Folks
Shared: Casual · Puzzle · Hand-drawn

Luma Island
Shared: Cozy · Casual · Relaxing

FEZ
Shared: Puzzle · Exploration · Casual