How many copies has Library Of Ruina sold?

indielist estimates Library Of Ruina has sold between 1,896,000 and 4,424,000 units (median 3,160,000), derived from its 39,500 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.

Who developed Library Of Ruina?

Library Of Ruina was developed by ProjectMoon and published by ProjectMoon.

Who published Library Of Ruina?

Library Of Ruina was published by ProjectMoon, developed by ProjectMoon. See ProjectMoon's full catalogue and submission status on indielist.

When was Library Of Ruina released?

Library Of Ruina was released in 2021.

How many reviews does Library Of Ruina have on Steam?

Library Of Ruina has 39,500 Steam reviews, of which 94% are positive.

Is Library Of Ruina worth playing?

Steam players rate Library Of Ruina 94% positive across 39,500 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.

Library Of Ruina

Aug 10, 2021 Indie $29.99

Developer ProjectMoon Publisher ProjectMoon

Profile updated May 2026

Library Of Ruina features tactical card-based combat mechanics. The title launched in 2021 and has since accumulated 13,273 reviews on Steam. With a 96% positive rating, the game maintains an overwhelmingly positive status among users.

Library Of Ruina is a 2021 Indie game developed by ProjectMoon and published by ProjectMoon. On Steam it has gathered 39,500 player reviews, 94% of them positive, which counts as a very positive reception among indie titles in the Indie category. The game is available on windows, and launched at $30. The pairing of developer ProjectMoon with publisher ProjectMoon is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Indie projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 1.9 million to 4.4 million units, with the full Boxleiter factor breakdown shown on this page rather than a single black-box figure. Within indielist's catalog of indie games mapped to their studios, publishers, and funding, Library Of Ruina can be compared against similar Indie titles and benchmarked on review counts and estimated sales.

Reviews

39,500

Positive

94%

Steam appid

1256670

Engine

Unknown

Players (snapshot)

2,615

Historical snapshot · 2026-06-07 13:21 UTC

Sales estimate

v1.0

1.9M to 4.4M

units (median: 3.2M)

≈ $32.5M to $75.8M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)

1.9M median 4.4M

+ How is this calculated?

39,500 reviews × NB(80) = 3,160,000 median units

Factor	Adjustment
base	+50
year_2021	+15
price_$30	+5
positive_94%	+10
final NB	80

Heuristic display range: median × [0.6, 1.4]. Boundary protection: NB ∈ [15, 150].

Methodology & limitations

Sales estimates use an additive Boxleiter-derived heuristic against public Steam review counts. They are not authoritative sales data, and the fixed display range is not a statistically validated confidence interval. Actual results may fall outside it, especially for deeply discounted or bundle-heavy titles. Algorithm version v1.0. Read the exact method and validation status.

indielist estimates lifetime unit sales for Library Of Ruina at roughly 1.9 million to 4.4 million copies, with a median around 3.2 million, derived from its 39,500 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $54.1M in net revenue after Steam's 30% cut, regional pricing, and refunds. Unlike black-box trackers, the full calculation is shown on this page: a base review-to-sales multiplier is adjusted for release year, launch price, review sentiment, studio size, and genre, and every adjustment is listed so developers, publishers, and investors can audit exactly how the figure was reached. The range itself reflects genuine uncertainty — review-to-sales ratios vary widely between games — so indielist publishes a low, median, and high band rather than a false-precision single number, and treats free-to-play, heavily discounted, and bundle-distributed titles as having wider error margins still.

Price history

55 observed days · window low $10.19

Across 55 observed UTC days from 2026-05-15 to 2026-07-24, the daily lowest tracked USD price across stores ranged from $10.19 to $29.99. The tracked-window low was $10.19 on 2026-06-29.

Real store observations · daily lowest tracked USD price across stores · missing days are not filled.

Where to buy

Affiliate disclosure

Steam reference

$29.99 Buy
Green Man Gaming

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Fanatical

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Humble Store

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GOG.com

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Latest tracked store observations (2026-07-24 04:28 UTC), cheapest first. Prices may have changed since observation. Some are affiliate links — we may earn a commission at no extra cost to you. Learn more.

Platforms

windows

Frequently asked questions

How many copies has Library Of Ruina sold?: indielist estimates Library Of Ruina has sold between 1,896,000 and 4,424,000 units (median 3,160,000), derived from its 39,500 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
Who developed Library Of Ruina?: Library Of Ruina was developed by ProjectMoon and published by ProjectMoon.
Who published Library Of Ruina?: Library Of Ruina was published by ProjectMoon, developed by ProjectMoon. See ProjectMoon's full catalogue and submission status on indielist.
When was Library Of Ruina released?: Library Of Ruina was released in 2021.
How many reviews does Library Of Ruina have on Steam?: Library Of Ruina has 39,500 Steam reviews, of which 94% are positive.
Is Library Of Ruina worth playing?: Steam players rate Library Of Ruina 94% positive across 39,500 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.

Players looking for games like Library Of Ruina can compare it on indielist against semantically similar Indie titles such as Lobotomy Corporation | Monster Management Simulation, Chrono Ark, Slay the Spire, Shogun Showdown, ranked by shared tags and genre rather than by ad spend. On the developer side, ProjectMoon's other releases and ProjectMoon's wider catalog are one click away, letting developers benchmark where Library Of Ruina sits among a studio's body of work and how its publisher's portfolio performs. Because indielist maps studios, publishers, games, and funding into one connected graph, the same Library Of Ruina page serves three audiences at once: players hunting their next Indie game, developers studying how comparable projects were positioned and what they sold, and investors tracing which teams and labels are active in the space. A machine-readable markdown mirror of this page is published at the same path with a .md suffix for AI assistants, and its review, price, and sales-estimate figures are refreshed on a schedule rather than frozen at launch.

Matched from shared Steam tags and primary genre. Review count breaks ties; it is not a personal recommendation score.