Games like Library Game
Games like Library Game include Firewatch, What Remains of Edith Finch, The Beginner's Guide, Before Your Eyes, and Gone Home. We matched them by the tags players give Library Game on Steam (Adventure, Interactive Fiction, Walking Simulator, First-Person, and Stylized): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · Adventure

The Beginner's Guide
Shared: Walking Simulator · First-Person · Story Rich

Before Your Eyes
Shared: Interactive Fiction · Emotional · First-Person

Gone Home
Shared: Walking Simulator · First-Person · Atmospheric

To the Moon
Shared: Adventure · Story Rich · Interactive Fiction

Brothers - A Tale of Two Sons
Shared: Adventure · Atmospheric · Story Rich

Finding Paradise
Shared: Adventure · Emotional · Story Rich

A Bird Story
Shared: Adventure · Interactive Fiction · Story Rich

Amnesia: A Machine For Pigs
Shared: Walking Simulator · First-Person · Atmospheric

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

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

Killer Frequency
Shared: Adventure · Interactive Fiction · First-Person

The Witcher 3: Wild Hunt — Remastered
Shared: Adventure · Atmospheric · Story Rich

Fallout 4
Shared: Adventure · Atmospheric · First-Person

Call of the Sea
Shared: Adventure · First-Person · Story Rich

Road 96
Shared: First-Person · Adventure · Atmospheric

The Stanley Parable
Shared: Walking Simulator · First-Person · Adventure

Impostor Factory
Shared: Adventure · Emotional · Story Rich

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Interactive Fiction · Emotional · Story Rich

Florence
Shared: Adventure · Indie · Interactive Fiction

The Last Campfire
Shared: Adventure · Atmospheric · Singleplayer

Cairn
Shared: Adventure · Stylized · Indie

Riven
Shared: Adventure · First-Person · Atmospheric