The Game Census
Library Of Ruina cover art

Library Of Ruina

ProjectMoon · 2021-08-10

SteamPlayStation StoreMicrosoft Store

IndieRPGStrategy

Modes: Single player · Perspectives: Side view

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.

Library Of Ruina is an Indie, RPG, Strategy game released in 2021, priced at $29.99, with an estimated 1,000,000 .. 2,000,000 owners and a Very Positive review sentiment (94% of 45064 reviews).

2,187
playing now
94%
positive of 46k reviews
Very Positive
steam's rating (official)
1,000,000–2,000,000
owners (SteamSpy est.)
54
twitch viewers (latest)
10.8
viewers/channel (concentration)
89/100
IGDB user rating (13 ratings)
183
Nexus mods (937k downloads)
4.91★
PlayStation Store rating (1,063 ratings)
122h
time to beat (IGDB)
gold
deck/linux tier (ProtonDB)
Playable
Steam Deck (Valve)
SteamOS: Playable
$29.99
steam price (US)

2,187 players in-game as of 2026-10-14 11:00 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.

Trailer

Library Of Ruina trailer thumbnail

Library of Ruina Launch Trailer

≈312,285 YouTube results for this game's trailer search

Health check

Healthy
  • · 2,187 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 1% of 49,548 Indie games in the census by review count.

Health tier since 2026-08-29

Estimated sales: 914k–2.1M copies

Review-multiple estimate from 45,710 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 4 of 15 observed days (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

3.7k5752026-09-15 12:00 — 1,857 players2026-09-16 20:00 — 983 players2026-09-18 03:00 — 876 players2026-09-19 11:00 — 1,877 players2026-09-20 18:00 — 1,207 players2026-09-22 02:00 — 1,020 players2026-09-23 10:00 — 1,374 players2026-09-24 17:00 — 993 players2026-09-26 01:00 — 1,026 players2026-09-27 08:00 — 1,847 players2026-09-28 16:00 — 1,269 players2026-09-29 23:00 — 705 players2026-10-01 07:00 — 1,162 players2026-10-02 14:00 — 2,546 players2026-10-03 22:00 — 1,125 players2026-10-05 06:00 — 2,807 players2026-10-06 13:00 — 3,614 players2026-10-07 21:00 — 1,015 players2026-10-09 04:00 — 2,250 players2026-10-10 12:00 — 3,681 players2026-10-11 20:00 — 1,425 players2026-10-13 03:00 — 1,480 players2026-10-14 11:00 — 2,187 players
Concurrent players, hourly average, last 30 days (census samples).
2.5k328May 2020Aug 2026May 2020 — avg 690 · peak 3,672Jul 2020 — avg 578 · peak 3,480Sep 2020 — avg 726 · peak 4,407Nov 2020 — avg 787 · peak 4,547Jan 2021 — avg 1,231 · peak 6,531Mar 2021 — avg 965 · peak 5,113May 2021 — avg 1,077 · peak 3,965Jul 2021 — avg 1,109 · peak 2,131Sep 2021 — avg 825 · peak 1,773Nov 2021 — avg 864 · peak 1,998Jan 2022 — avg 935 · peak 1,968Mar 2022 — avg 838 · peak 1,830May 2022 — avg 970 · peak 2,332Jul 2022 — avg 1,319 · peak 2,439Sep 2022 — avg 1,052 · peak 2,490Nov 2022 — avg 1,164 · peak 2,734Jan 2023 — avg 1,565 · peak 2,847Mar 2023 — avg 1,482 · peak 3,691May 2023 — avg 1,302 · peak 2,879Jul 2023 — avg 1,582 · peak 2,939Sep 2023 — avg 1,161 · peak 2,760Nov 2023 — avg 1,178 · peak 3,269Jan 2024 — avg 1,075 · peak 2,197Mar 2024 — avg 1,010 · peak 2,222May 2024 — avg 1,003 · peak 2,170Jul 2024 — avg 1,010 · peak 1,797Sep 2024 — avg 1,170 · peak 2,437Nov 2024 — avg 1,991 · peak 5,012Jan 2025 — avg 1,791 · peak 3,443Mar 2025 — avg 1,318 · peak 2,979May 2025 — avg 1,165 · peak 2,300Jul 2025 — avg 1,772 · peak 3,094Sep 2025 — avg 1,060 · peak 2,255Nov 2025 — avg 1,683 · peak 3,722Jan 2026 — avg 1,714 · peak 3,371Mar 2026 — avg 1,779 · peak 4,512May 2026 — avg 1,421 · peak 2,881Jul 2026 — avg 2,493 · peak 4,873Aug 2026 — avg 1,863 · peak 2,942
Monthly average players (source: steamcharts.com) — history via steamcharts.com; live census sampling since Aug 2026.

Chart history

PositiveNegative
81812026-09-212026-10-142026-09-21: 81 new positive2026-09-21: 6 new negative2026-09-22: 14 new positive2026-09-22: 2 new negative2026-09-23: 21 new positive2026-09-23: 1 new negative2026-09-24: 9 new positive2026-09-25: 17 new positive2026-09-25: 1 new negative2026-09-27: 15 new positive2026-09-27: 4 new negative2026-09-28: 19 new positive2026-09-29: 17 new positive2026-09-30: 5 new positive2026-09-30: 1 new negative2026-10-01: 13 new positive2026-10-01: 1 new negative2026-10-04: 35 new positive2026-10-04: 1 new negative2026-10-05: 47 new positive2026-10-05: 4 new negative2026-10-06: 34 new positive2026-10-06: 5 new negative2026-10-07: 53 new positive2026-10-07: 3 new negative2026-10-08: 30 new positive2026-10-09: 28 new positive2026-10-10: 26 new positive2026-10-10: 3 new negative2026-10-11: 34 new positive2026-10-13: 21 new positive2026-10-13: 5 new negative2026-10-14: 16 new positive2026-10-14: 3 new negative
New Steam reviews per day (census review snapshots). Positive above the line, negative below.

Price history

$29.99$10.192020-05-162026-10-102020-05-16 — 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 $29.992026-09-12 — best price $29.992026-09-26 — best price $29.992026-10-10 — best price $29.99
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

3391952026-06-02 — 259 pageviews2026-06-06 — 224 pageviews2026-06-10 — 332 pageviews2026-06-14 — 222 pageviews2026-06-18 — 208 pageviews2026-06-22 — 251 pageviews2026-06-26 — 321 pageviews2026-06-30 — 288 pageviews2026-07-04 — 273 pageviews2026-07-08 — 274 pageviews2026-07-12 — 267 pageviews2026-07-16 — 275 pageviews2026-07-20 — 241 pageviews2026-07-24 — 296 pageviews2026-07-28 — 279 pageviews2026-08-01 — 275 pageviews2026-08-05 — 331 pageviews2026-08-09 — 304 pageviews2026-08-13 — 220 pageviews2026-08-17 — 257 pageviews2026-08-21 — 243 pageviews2026-08-25 — 242 pageviews2026-08-29 — 254 pageviews2026-09-02 — 279 pageviews2026-09-06 — 242 pageviews2026-09-10 — 237 pageviews2026-09-14 — 228 pageviews2026-09-18 — 264 pageviews2026-09-22 — 247 pageviews2026-09-26 — 216 pageviews2026-09-30 — 234 pageviews2026-10-04 — 255 pageviews2026-10-08 — 289 pageviews2026-10-12 — 221 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Twitch viewers

24302026-09-30 21:34 — 10 viewers2026-10-01 06:34 — 23 viewers2026-10-01 15:34 — 0 viewers2026-10-02 00:34 — 1 viewers2026-10-02 09:34 — 4 viewers2026-10-02 18:34 — 103 viewers2026-10-03 03:34 — 15 viewers2026-10-03 12:34 — 35 viewers2026-10-03 21:34 — 0 viewers2026-10-04 06:34 — 27 viewers2026-10-04 15:34 — 130 viewers2026-10-05 00:34 — 0 viewers2026-10-05 09:34 — 2 viewers2026-10-05 18:34 — 28 viewers2026-10-06 03:34 — 12 viewers2026-10-06 12:34 — 2 viewers2026-10-06 21:34 — 23 viewers2026-10-07 06:34 — 3 viewers2026-10-07 15:34 — 27 viewers2026-10-08 00:34 — 11 viewers2026-10-08 09:34 — 0 viewers2026-10-08 18:34 — 0 viewers2026-10-09 03:34 — 12 viewers2026-10-09 12:34 — 13 viewers2026-10-09 21:34 — 14 viewers2026-10-10 06:34 — 8 viewers2026-10-10 15:34 — 8 viewers2026-10-11 00:34 — 67 viewers2026-10-11 09:34 — 1 viewers2026-10-11 18:34 — 13 viewers2026-10-12 03:34 — 243 viewers2026-10-12 12:34 — 4 viewers2026-10-12 21:34 — 11 viewers2026-10-13 06:34 — 4 viewers2026-10-13 15:34 — 9 viewers2026-10-14 00:34 — 8 viewers2026-10-14 09:34 — 1 viewers2026-10-14 18:34 — 48 viewers2026-10-14 20:34 — 54 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

Post-launch support: 2 DLC released, first 2021-06-10, latest 2021-09-03 (Steam store data)

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.

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