GAME · released

Library Of Ruina

ProjectMoon

Quick read

Library of Ruina is a story deckbuilder where receptions are fights and the library is the campaign map you keep walking. A guest list is a chapter, and the next book is a fight you already feared.

What kind of game is it?

Narrative plus key pages. A reception has a plot, a guest list, and a deck that remembers the last conversation. This is a campaign you inhabit rather than a fifteen-minute poker run you discard, and the library is a city you do not leave between fights.

Who is it for?

For players who enjoy a long card tragedy told in key pages.

How it plays

Loop: Building a deck
Sessions: Long sessions
Progression: Campaign
Players: Single-player
Structure: Linear
Tone: Dark · Brutal

Game DNA

What playing it feels like, out of 100. Our reading, separate from Steam reviews.

Progression80
Estimate
Social18
Estimate

Key Steam facts

Steam store figures, checked 17 Aug 2026.

Release

released

2021-08-10

Review score

94.5%

Checked 17 Aug 2026.

Steam positive percent.

Review count

44,499

Checked 17 Aug 2026.

Store price

€24.99

Checked 17 Aug 2026.

Languages

Demo

Early Access

Players

Single-player

How many people play Library Of Ruina?

Estimates from public Steam data, not figures from the studio. Ranges, not exact numbers.

Estimated copies

1.1M – 2.4M

Steam reviews × 25 to 55. For a free game: players, not sales.

All-time peak players

7,211

Most people playing at the same moment, per SteamCharts.

Average players, Aug 2026

1,863

Peak that month: 2,942.

Median playtime

71.6 h

Half of 300 recent reviewers played 24.2–123.5 h. 0% under 2 h.

Players over time

Sept 2023Aug 2026

Where the players are

Languages of the last 300 Steam reviews. A proxy for regions, not a country split.

English45%
Simplified Chinese19%
Russian12%
Korean10%
Spanish (Spain)4%
Portuguese (Brazil)2%

Steam data checked 4 Oct 2026

What makes it different?

Library Of Ruina keeps the focus on building a deck for the whole session.

Core mechanics

How it scores

The fantasy: Optimization and Mastery. Our scores out of 100, separate from Steam reviews.

Build varianceEstimate

80 / 100

Strategy depthEstimate

78 / 100

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Related games

Nearby games. Not always a direct substitute.

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Genre / subgenre

Steam genre: deckbuilding.

Related rankings

Sources

Store price checked 17 Aug 2026.

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