The Game Census
Library Of Ruina cover art

Library Of Ruina

ProjectMoon · 2021-08-10

SteamPlayStation StoreMicrosoft Store

IndieRPGStrategy

Modes: Single player

Releases: Apr 25, 2024 (Nintendo Switch), Aug 10, 2021 (PC (Microsoft Windows)), Apr 25, 2024 (PlayStation 4), Aug 10, 2021 (Xbox One)

"May you find your book in this place." Combat between the guests and the librarians breaks out as if it were on a stage. Defeated guests turn into books, and the Library grows onward. And eventually, get your hands on… The one singular, perfect book.

1,469
playing now
94%
positive of 45k reviews
Very Positive
steam rating
1,000,000–2,000,000
owners (SteamSpy est.)
12
twitch viewers (latest)
89/100
IGDB user rating (13 ratings)
122h
time to beat (IGDB)
gold
deck/linux tier (ProtonDB)
$29.99
steam price (US)

1,469 players in-game as of 2026-08-30 01:00 UTC (census sample)

Library of Ruina is an indie deck-building role-playing game developed and published by Project Moon. Initially released for Windows and Xbox One on August 10, 2021, it is a sequel to the 2018 game Lobotomy Corporation.

Health check

Healthy
  • · 1,469 players in-game at the last census sample.
  • · 5,603 reviews in the last 8 weeks (~700/week).
  • · Review velocity up 13% vs the prior 8 weeks.
  • · Top 2% of 17,990 Indie games in the census by review count.

Health tier since 2026-08-29

Estimated sales: 895k–2.0M copies

Review-multiple estimate from 44,764 total reviews — how this is computed.

Current store prices

Microsoft Store$29.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $10.19 at Steam (2022-11-22) · bundled 2×via IsThereAnyDeal

12-month high $29.99 · on sale 5 of 11 observed days · $19.80 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
1.4k1.4k20202026Week of 2020-05-01: 1,408 positiveWeek of 2020-05-01: 172 negativeWeek of 2020-06-01: 450 positiveWeek of 2020-06-01: 53 negativeWeek of 2020-07-01: 341 positiveWeek of 2020-07-01: 39 negativeWeek of 2020-08-01: 301 positiveWeek of 2020-08-01: 29 negativeWeek of 2020-09-01: 289 positiveWeek of 2020-09-01: 41 negativeWeek of 2020-10-01: 177 positiveWeek of 2020-10-01: 17 negativeWeek of 2020-11-01: 535 positiveWeek of 2020-11-01: 29 negativeWeek of 2020-12-01: 353 positiveWeek of 2020-12-01: 22 negativeWeek of 2021-01-01: 381 positiveWeek of 2021-01-01: 39 negativeWeek of 2021-02-01: 455 positiveWeek of 2021-02-01: 26 negativeWeek of 2021-03-01: 271 positiveWeek of 2021-03-01: 25 negativeWeek of 2021-04-01: 1,099 positiveWeek of 2021-04-01: 211 negativeWeek of 2021-05-01: 453 positiveWeek of 2021-05-01: 27 negativeWeek of 2021-06-01: 428 positiveWeek of 2021-06-01: 25 negativeWeek of 2021-07-01: 454 positiveWeek of 2021-07-01: 28 negativeWeek of 2021-08-01: 591 positiveWeek of 2021-08-01: 49 negativeWeek of 2021-09-01: 304 positiveWeek of 2021-09-01: 22 negativeWeek of 2021-10-01: 317 positiveWeek of 2021-10-01: 22 negativeWeek of 2021-11-01: 825 positiveWeek of 2021-11-01: 27 negativeWeek of 2021-12-01: 360 positiveWeek of 2021-12-01: 17 negativeWeek of 2022-01-01: 372 positiveWeek of 2022-01-01: 14 negativeWeek of 2022-02-01: 318 positiveWeek of 2022-02-01: 14 negativeWeek of 2022-03-01: 318 positiveWeek of 2022-03-01: 10 negativeWeek of 2022-04-01: 272 positiveWeek of 2022-04-01: 10 negativeWeek of 2022-05-01: 319 positiveWeek of 2022-05-01: 17 negativeWeek of 2022-06-01: 408 positiveWeek of 2022-06-01: 21 negativeWeek of 2022-07-01: 482 positiveWeek of 2022-07-01: 20 negativeWeek of 2022-08-01: 377 positiveWeek of 2022-08-01: 15 negativeWeek of 2022-09-01: 353 positiveWeek of 2022-09-01: 21 negativeWeek of 2022-10-01: 366 positiveWeek of 2022-10-01: 26 negativeWeek of 2022-11-01: 563 positiveWeek of 2022-11-01: 18 negativeWeek of 2022-12-01: 579 positiveWeek of 2022-12-01: 27 negativeWeek of 2023-01-01: 634 positiveWeek of 2023-01-01: 25 negativeWeek of 2023-02-01: 496 positiveWeek of 2023-02-01: 22 negativeWeek of 2023-03-01: 601 positiveWeek of 2023-03-01: 47 negativeWeek of 2023-04-01: 447 positiveWeek of 2023-04-01: 25 negativeWeek of 2023-05-01: 465 positiveWeek of 2023-05-01: 32 negativeWeek of 2023-06-01: 570 positiveWeek of 2023-06-01: 28 negativeWeek of 2023-07-01: 1,048 positiveWeek of 2023-07-01: 221 negativeWeek of 2023-08-01: 530 positiveWeek of 2023-08-01: 53 negativeWeek of 2023-09-01: 472 positiveWeek of 2023-09-01: 30 negativeWeek of 2023-10-01: 421 positiveWeek of 2023-10-01: 15 negativeWeek of 2023-11-01: 580 positiveWeek of 2023-11-01: 24 negativeWeek of 2023-12-01: 421 positiveWeek of 2023-12-01: 19 negativeWeek of 2024-01-01: 438 positiveWeek of 2024-01-01: 22 negativeWeek of 2024-02-01: 442 positiveWeek of 2024-02-01: 12 negativeWeek of 2024-03-01: 435 positiveWeek of 2024-03-01: 13 negativeWeek of 2024-04-01: 350 positiveWeek of 2024-04-01: 17 negativeWeek of 2024-05-01: 407 positiveWeek of 2024-05-01: 20 negativeWeek of 2024-06-01: 506 positiveWeek of 2024-06-01: 14 negativeWeek of 2024-07-01: 476 positiveWeek of 2024-07-01: 16 negativeWeek of 2024-08-01: 519 positiveWeek of 2024-08-01: 19 negativeWeek of 2024-09-01: 536 positiveWeek of 2024-09-01: 10 negativeWeek of 2024-10-01: 552 positiveWeek of 2024-10-01: 26 negativeWeek of 2024-11-01: 894 positiveWeek of 2024-11-01: 32 negativeWeek of 2024-12-01: 788 positiveWeek of 2024-12-01: 37 negativeWeek of 2025-01-01: 839 positiveWeek of 2025-01-01: 39 negativeWeek of 2025-02-01: 568 positiveWeek of 2025-02-01: 18 negativeWeek of 2025-03-01: 612 positiveWeek of 2025-03-01: 26 negativeWeek of 2025-04-01: 496 positiveWeek of 2025-04-01: 23 negativeWeek of 2025-05-01: 449 positiveWeek of 2025-05-01: 25 negativeWeek of 2025-06-01: 552 positiveWeek of 2025-06-01: 29 negativeWeek of 2025-07-01: 832 positiveWeek of 2025-07-01: 39 negativeWeek of 2025-08-01: 598 positiveWeek of 2025-08-01: 30 negativeWeek of 2025-09-01: 432 positiveWeek of 2025-09-01: 22 negativeWeek of 2025-10-01: 702 positiveWeek of 2025-10-01: 38 negativeWeek of 2025-11-01: 661 positiveWeek of 2025-11-01: 32 negativeWeek of 2025-12-01: 563 positiveWeek of 2025-12-01: 18 negativeWeek of 2026-01-01: 669 positiveWeek of 2026-01-01: 35 negativeWeek of 2026-02-01: 566 positiveWeek of 2026-02-01: 24 negativeWeek of 2026-03-01: 719 positiveWeek of 2026-03-01: 44 negativeWeek of 2026-04-01: 599 positiveWeek of 2026-04-01: 35 negativeWeek of 2026-05-01: 537 positiveWeek of 2026-05-01: 35 negativeWeek of 2026-06-01: 612 positiveWeek of 2026-06-01: 35 negativeWeek of 2026-07-01: 1,043 positiveWeek of 2026-07-01: 69 negativeWeek of 2026-08-01: 634 positiveWeek of 2026-08-01: 37 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

2.8k1.1k2026-08-06 21:00 — 1,180 players2026-08-07 05:00 — 2,040 players2026-08-07 13:00 — 2,693 players2026-08-07 21:00 — 1,246 players2026-08-08 05:00 — 2,372 players2026-08-08 13:00 — 2,823 players2026-08-08 21:00 — 1,322 players2026-08-09 05:00 — 2,258 players2026-08-09 13:00 — 2,816 players2026-08-09 21:00 — 1,271 players2026-08-10 05:00 — 2,053 players2026-08-10 14:00 — 2,686 players2026-08-10 22:00 — 1,224 players2026-08-11 06:00 — 2,096 players2026-08-11 14:00 — 2,808 players2026-08-12 21:00 — 1,152 players2026-08-14 05:00 — 1,826 players2026-08-15 13:00 — 2,702 players2026-08-16 21:00 — 1,320 players2026-08-18 04:00 — 1,839 players2026-08-19 12:00 — 2,529 players2026-08-20 19:00 — 1,127 players2026-08-22 03:00 — 1,724 players2026-08-23 10:00 — 2,306 players2026-08-24 18:00 — 1,345 players2026-08-26 02:00 — 1,446 players2026-08-27 10:00 — 1,908 players2026-08-28 17:00 — 1,550 players2026-08-30 01:00 — 1,469 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$29.99$10.192020-05-162026-08-292020-05-16 — best price $24.992020-08-11 — best price $24.992020-11-12 — best price $29.992021-01-05 — best price $29.992021-02-15 — best price $29.992021-07-08 — best price $29.992021-08-17 — best price $29.992021-10-21 — best price $22.492021-10-28 — best price $22.492021-11-24 — best price $22.492021-12-22 — best price $22.492022-01-27 — best price $22.492022-03-07 — best price $22.492022-05-20 — best price $20.092022-06-23 — best price $14.992022-09-15 — best price $13.492022-10-24 — best price $13.492022-11-22 — best price $10.192022-12-22 — best price $10.192023-01-23 — best price $10.192023-03-16 — best price $10.192023-04-24 — best price $10.192023-06-29 — best price $10.192023-08-28 — best price $10.192023-10-26 — best price $10.192024-10-28 — best price $13.492024-12-19 — best price $13.492025-03-17 — best price $13.492025-06-26 — best price $13.492025-10-01 — best price $13.492025-10-27 — best price $13.492026-01-02 — best price $10.192026-03-19 — best price $10.192026-06-29 — best price $10.192026-08-29 — best price $29.99
Lowest recorded price across tracked stores, per day (census snapshots).

Twitch viewers

16402026-08-29 09:34 — 104 viewers2026-08-29 10:34 — 0 viewers2026-08-29 11:34 — 3 viewers2026-08-29 12:35 — 7 viewers2026-08-29 13:34 — 11 viewers2026-08-29 14:34 — 12 viewers2026-08-29 15:34 — 158 viewers2026-08-29 16:34 — 164 viewers2026-08-29 17:34 — 141 viewers2026-08-29 18:34 — 14 viewers2026-08-29 19:35 — 12 viewers2026-08-29 20:34 — 8 viewers2026-08-29 21:34 — 12 viewers2026-08-29 22:34 — 8 viewers2026-08-29 23:34 — 0 viewers2026-08-30 00:34 — 0 viewers2026-08-30 01:34 — 12 viewers2026-08-30 02:34 — 19 viewers2026-08-30 03:34 — 23 viewers2026-08-30 04:34 — 73 viewers2026-08-30 05:34 — 123 viewers2026-08-30 06:34 — 124 viewers2026-08-30 07:34 — 137 viewers2026-08-30 08:34 — 119 viewers2026-08-30 09:34 — 106 viewers2026-08-30 10:34 — 102 viewers2026-08-30 11:34 — 6 viewers2026-08-30 12:34 — 8 viewers2026-08-30 13:34 — 11 viewers2026-08-30 14:34 — 15 viewers2026-08-30 15:34 — 12 viewers
Hourly Twitch viewers (census snapshots).

Completion

60+
achievements tracked
94%
earned "The Road"
30.8%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsSingle-playerSteam AchievementsSteam WorkshopPartial Controller SupportSteam CloudRemote Play on TabletFamily Sharing2 DLC

3 supported languages: English, Japanese, Simplified Chinese

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)7,3886%76
Xbox One, Windows (Xbox)5,9851%76
PS4 (PlayStation)24010%47
Switch (Nintendo)400%0

Players tracked by Exophase (achievement/trophy trackers) — a sample of the player base, not total sales.

Where its players are

Share of Steam reviews by language (top languages measured) — a proxy for where the player base lives.

Player tags

GoreIndieStrategyCard GameDifficultStory RichTurn-BasedCard BattlerDeckbuildingSingleplayer

Census log

Computed from census-recorded observations only — dates are observation dates.

Players also track

Star Control®: OriginsSurvivalistDead AgeReverse CrawlForce of NatureCHANGE: A Homeless Survival ExperienceApsulov: End of GodsPacify

Similarity via IGDB.

Official site ↗Reddit ↗