Build the greatest library the world has ever seen — one book at a time.

Idle Library is a relaxing incremental clicker where your humble collection grows into a vast archive of knowledge spanning rare manuscripts, ancient tomes, and legendary codices. Start by cataloging books by hand, then expand your institution by hiring librarians, digitizing archives, opening new wings, and funding cutting-edge research to accelerate your growth.

Whether you're actively optimizing your upgrades or letting your library grow while you're away, progress never stops.

Grow Your Collection

Turn a small reading room into a sprawling knowledge empire. Invest in upgrades that increase your cataloging efficiency, automate book acquisition, and unlock powerful global income multipliers through special collections.

Research & Knowledge System

Earn Research Points to unlock permanent upgrades across multiple knowledge paths. Reduce research costs, enhance production, and specialize your library’s growth strategy to reach new milestones faster than ever before.

Prestige & Long-Term Progression

Renovate your library to reset your progress in exchange for powerful permanent bonuses. Each prestige level opens new opportunities for exponential growth and deeper optimization.

Daily Quests & Achievements

Complete daily objectives and earn achievements to gain rewards that accelerate your progress and provide new strategic choices.

Events & Time Warps

Host Book Festivals and participate in limited-time events for massive temporary boosts. Use Time Warps to instantly simulate hours of growth and push your library to the next level.

Customize Your Library

Unlock and apply unique visual themes to personalize the look and feel of your growing archive.

Features

• Idle and active incremental gameplay

• Research tree with permanent upgrades

• Prestige system for long-term progression

• Daily quests and achievements

• Special collections and global multipliers

• Limited-time events

• Customizable visual themes

• Offline progress

• Cloud saves

• Steam achievements