PCGame

Library Of Ruina

Turn-based deckbuilding RPG where librarians battle guests for books

ProjectMoon · Released Aug 10, 2021

IndieRPGStrategy

Reviews
Very Positive
94% of 44K
Recent reviews
Very Positive
93% of 666 in 30 days
Players
2,607
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
4 years ago
Nov 19, 2021
Minimum PC
GeForce GTX 560
8 GB RAM · 10 GB disk
Full requirements

What is Library Of Ruina?

A single-player, turn-based deckbuilding RPG set in a mysterious Library within the City. You choose cards for librarians, counter guests’ announced moves, and resolve clashes with dice; defeated guests become books that unlock further invitations and reveal their stories.

For you if...

  • +you enjoy difficult deckbuilding with tactical turn-based battles
  • +you want a story-heavy game with psychological horror
  • +you value character writing, worldbuilding, and a prominent soundtrack

Not for you if...

  • −you dislike steep difficulty spikes and complex combat systems
  • −you want brief battles with little micromanagement
  • −you prefer action over reading and deck management

What players say

94% of 44,252 reviews are positive · 93% of 666 in the last 30 days

Players most often praise the story, character writing, worldbuilding, soundtrack, and depth of the deckbuilding combat. Common complaints target unclear tutorials, cumbersome interfaces, steep difficulty spikes, and late-game battles that become drawn out; some players also find dice outcomes too influential.

Players over time

▲ +0% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 2,607 players on Nov 7, 2026.

Show the data
DayPlayers
Nov 7, 20262,607
Nov 6, 20261,273
Nov 5, 20261,068
Nov 4, 20261,343
Nov 3, 20261,329
Nov 2, 20261,203
Nov 1, 20262,563
Oct 31, 20262,553
Oct 30, 20261,319
Oct 29, 20261,126
Oct 28, 20261,382
Oct 27, 20261,189
Oct 26, 20261,162
Oct 25, 20262,505
Oct 24, 20261,780
Oct 23, 20261,138
Oct 22, 20261,203
Oct 21, 20261,134
Oct 20, 20261,172
Oct 18, 20262,231
Oct 17, 20261,978
Oct 16, 20261,190
Oct 15, 20261,495
Oct 14, 20261,254
Oct 13, 20261,262
Oct 11, 20262,295
Oct 10, 20261,647
Oct 9, 20261,570
Oct 8, 20261,588
Oct 7, 20261,810
Oct 6, 20261,858
Oct 4, 20261,883
Oct 3, 20261,679
Oct 2, 20261,131
Oct 1, 20261,416
Sep 30, 2026869
Sep 29, 2026819
Sep 27, 20261,355
Sep 26, 20261,290
Sep 25, 20261,179
Sep 24, 20261,163
Sep 23, 20261,369
Sep 23, 2026863
Sep 22, 2026852
Sep 21, 2026971

How many players finish Library Of Ruina?

22% of Steam players have unlocked «That’s This, and This is That», the achievement for finishing the main story.

Share of everyone who owns the game on Steam, including those who barely played it. Updated weekly.

Screenshots and trailer

Library Of Ruina screenshot 1

Library Of Ruina system requirements

Minimum: GeForce GTX 560, 8 GB RAM, 10 GB of disk space.

As published by the developer.

Can my PC run Library Of Ruina?

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Minimum

OS
Windows 7
Processor
Intel Core i5
Graphics
GeForce GTX 560+
Memory
8 GB RAM
Storage
10 GB available space
DirectX
Version 10

Recommended

OS
Windows 7
Processor
Intel Core i5
Graphics
GeForce GTX 560+
Memory
8 GB RAM
Storage
10 GB available space

Does Library Of Ruina have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Does Library Of Ruina run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

  • Default controller config not fully functional
  • Sometimes shows mouse, keyboard or non-Deck controller icons
  • In-game text is legible on Steam Deck
  • Default graphics settings perform well on Steam Deck
  • External controllers are not supported for the primary player

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
76
Steam features
Workshop, Cloud saves, Family Sharing
Age rating
17+
Languages
Full audio: Korean. Text only: English, Japanese, Simplified Chinese.

Does Library Of Ruina use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Nov 6, 2026. How to filter AI games on Steam

Tags

Recent updates

2 DLC available.

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