Library of Ruina
Turn-based card tactics RPG by Project Moon: as head librarian, players welcome guests, win books from battles and use them to unlock more dangerous encounters, cards and new chapters of the city.
- Developer
- ProjectMoon
- Publisher
- ProjectMoon
- Genre
- Indie, Kartenspiel, RPG, Rundenbasierte Strategie
- Game modes
- Singleplayer
- Game series
- ProjectMoon
- Also known as
- ライブラリー・オブ・ルイナ, 라이브러리 오브 루이나
- Steam user reviews
- 94 % positive · 45,207 reviews
- At Steam
- View store page
On this page 14 sections
What is Library of Ruina?
Library of Ruina is a turn-based card RPG by Project Moon. Librarians meet guests in tactical duels. Books won unlock new cards and invitations.
Updated 08.10.2026
Sources
- Offizielle Steam-Seite store.steampowered.com
Release
Early Access on Steam began on May 15, 2020. The full PC version and the native Xbox One release came out on Aug 10, 2021. On Apr 25, 2024, native releases followed for PlayStation 4 and Nintendo Switch. Arc System Works handled distribution of these two console versions.
Updated 08.10.2026
Sources
- Project Moon: Steam-Store store.steampowered.com
- Arc System Works: offizielle Spielseite arcsystemworks.jp
- Xbox Store xbox.com
Platforms
Library of Ruina was released natively for Windows PC, Xbox One, PlayStation 4 and Nintendo Switch. The Xbox One version is also playable on Xbox Series, but has no native Series release. The same applies to the PS4 version and PlayStation 5.
Updated 08.10.2026
Sources
- Arc System Works: Plattformen arcsystemworks.jp
- Xbox Store xbox.com
Gameplay
Before an encounter with guests, you put together cards and librarians to suit. In duels, chosen attacks and their dice values are compared. Effects, enemy weaknesses and the assignment of actions decide the outcome. After successful fights, books provide new cards and help you invite stronger visitors into the library.
Updated 08.10.2026
Sources
- Project Moon: Steam-Store store.steampowered.com
- Arc System Works: Spielsystem arcsystemworks.com
Trailer
System requirements
Steam lists as minimum configuration an Intel Core i5, 8 GB RAM, a GeForce GTX 560 or better, DirectX 10 and 10 GB of free storage. The older game listing Windows 7 sits alongside the note that the Steam client has required at least Windows 10 since 2024.
The details apply to Windows-PC.
Minimum
- CPU
- Intel Core i5
- RAM
- 8 GB
- Graphics
- GeForce GTX 560 or better
- Speicher
- 10 GB free
Editorial details
Updated 08.10.2026
Sources
- Offizielle PC-Anforderungen auf Steam store.steampowered.com
Emotions in combat
As the emotion level rises, the possible combat effects change. The librarians can gain advantages, while the guests become more dangerous. Especially challenging encounters can yield more valuable books.
Updated 08.10.2026
Sources
- Project Moon: offizieller Steam-Store store.steampowered.com
Books and progress
New books are more than collectibles. They expand your card pool and open invitations to new guests. If you get through difficult encounters, you can tune your deck more precisely for later opponents. Story progress and combat tactics are directly linked.
Updated 08.10.2026
Sources
- Project Moon: offizieller Steam-Store store.steampowered.com
- Arc System Works: Spielbeschreibung arcsystemworks.com
Angela, Roland and the City
Library director Angela is looking for a special book. Roland, a so-called fixer, helps her after his unexpected arrival. With the guests, more life stories from the city come into the library. The story continues the universe of Lobotomy Corporation.
Updated 08.10.2026
Sources
- Arc System Works: Spielbeschreibung arcsystemworks.com
- Project Moon: offizieller Steam-Store store.steampowered.com
Languages and console versions
Arc System Works released the PS4 and Switch versions with Japanese and Korean voice audio. Their text is available in English, Japanese, Korean, and Simplified and Traditional Chinese. A German language version is not mentioned on the official product page.
Updated 08.10.2026
Sources
- Arc System Works: Konsolenfassung arcsystemworks.jp
Workshop and extras
The PC version supports the Steam Workshop. A digital soundtrack and an artbook are sold separately. These extras are not new standalone versions of the main game.
Updated 08.10.2026
Sources
- Project Moon: offizieller Steam-Store store.steampowered.com
Similar games
More from ProjectMoon
Game series
Project Moon developed Library of Ruina and released the PC and Xbox One versions. Arc System Works handled the release for PS4 and Switch. Library of Ruina continues the world of Lobotomy Corporation.
More from ProjectMoon
Updated 08.10.2026
Sources
- Project Moon: offizieller Steam-Store store.steampowered.com
- Arc System Works: Spielbeschreibung arcsystemworks.com
- Arc System Works: Konsolenfassung arcsystemworks.jp
