The Game Census
BOOK OF HOURS cover art

BOOK OF HOURS

Weather Factory · 2023-08-17

SteamGOG

IndieRPGSimulation

Modes: Single player

Releases: Aug 17, 2023 (PC (Microsoft Windows)), Aug 17, 2023 (Mac), Aug 17, 2023 (Linux)

Restore a crumbling occult library by a winter sea. Build the world’s foremost collection of grimoires and arcana. Master the invisible arts. BOOK OF HOURS is a narrative crafting RPG set in a 1930s world of hidden gods and secret histories. What sort of Librarian will you choose to be?

243
playing now
89%
positive of 4.5k reviews
Very Positive
steam rating
200,000–500,000
owners (SteamSpy est.)
platinum
deck/linux tier (ProtonDB)
$24.99
steam price (US)

243 players in-game as of 2026-08-30 03:00 UTC (census sample)

Book of Hours is a narrative RPG developed and published by indie studio Weather Factory. It was released for Linux, macOS, and Windows computer systems on 17 August 2023.

Health check

Healthy
  • · 243 players in-game at the last census sample.
  • · 400 reviews in the last 8 weeks (~50/week).
  • · Review velocity down 9% vs the prior 8 weeks.
  • · Current weekly pace is under 5% of the all-time peak week (1,375 reviews).
  • · Top 10% of 17,990 Indie games in the census by review count.

Health tier since 2026-08-28

Estimated sales: 89k–200k copies

Review-multiple estimate from 4,450 total reviews — how this is computed.

Current store prices

GOG$24.99

Deal snapshots via CheapShark, refreshed daily.

All-time low: $9.99 at Steam (2026-07-16) · bundled 3×via IsThereAnyDeal

12-month high $24.99 · on sale 15 of 33 observed days · $15.00 above the all-time low (census price snapshots)

Review momentum

PositiveNegative
1.3k1.3k20232026Week of 2023-08-01: 1,292 positiveWeek of 2023-08-01: 83 negativeWeek of 2023-09-01: 248 positiveWeek of 2023-09-01: 25 negativeWeek of 2023-10-01: 112 positiveWeek of 2023-10-01: 13 negativeWeek of 2023-11-01: 296 positiveWeek of 2023-11-01: 18 negativeWeek of 2023-12-01: 64 positiveWeek of 2023-12-01: 11 negativeWeek of 2024-01-01: 68 positiveWeek of 2024-01-01: 6 negativeWeek of 2024-02-01: 46 positiveWeek of 2024-02-01: 8 negativeWeek of 2024-03-01: 104 positiveWeek of 2024-03-01: 7 negativeWeek of 2024-04-01: 96 positiveWeek of 2024-04-01: 11 negativeWeek of 2024-05-01: 43 positiveWeek of 2024-05-01: 6 negativeWeek of 2024-06-01: 75 positiveWeek of 2024-06-01: 4 negativeWeek of 2024-07-01: 88 positiveWeek of 2024-07-01: 8 negativeWeek of 2024-08-01: 152 positiveWeek of 2024-08-01: 103 negativeWeek of 2024-09-01: 335 positiveWeek of 2024-09-01: 283 negativeWeek of 2024-10-01: 113 positiveWeek of 2024-10-01: 20 negativeWeek of 2024-11-01: 83 positiveWeek of 2024-11-01: 8 negativeWeek of 2024-12-01: 71 positiveWeek of 2024-12-01: 17 negativeWeek of 2025-01-01: 59 positiveWeek of 2025-01-01: 12 negativeWeek of 2025-02-01: 43 positiveWeek of 2025-02-01: 8 negativeWeek of 2025-03-01: 52 positiveWeek of 2025-03-01: 5 negativeWeek of 2025-04-01: 37 positiveWeek of 2025-04-01: 8 negativeWeek of 2025-05-01: 41 positiveWeek of 2025-05-01: 3 negativeWeek of 2025-06-01: 52 positiveWeek of 2025-06-01: 16 negativeWeek of 2025-07-01: 50 positiveWeek of 2025-07-01: 5 negativeWeek of 2025-08-01: 40 positiveWeek of 2025-08-01: 3 negativeWeek of 2025-09-01: 30 positiveWeek of 2025-09-01: 12 negativeWeek of 2025-10-01: 31 positiveWeek of 2025-10-01: 9 negativeWeek of 2025-11-01: 89 positiveWeek of 2025-11-01: 13 negativeWeek of 2025-12-01: 45 positiveWeek of 2025-12-01: 11 negativeWeek of 2026-01-01: 45 positiveWeek of 2026-01-01: 8 negativeWeek of 2026-02-01: 34 positiveWeek of 2026-02-01: 11 negativeWeek of 2026-03-01: 29 positiveWeek of 2026-03-01: 4 negativeWeek of 2026-04-01: 22 positiveWeek of 2026-04-01: 2 negativeWeek of 2026-05-01: 59 positiveWeek of 2026-05-01: 12 negativeWeek of 2026-06-01: 43 positiveWeek of 2026-06-01: 9 negativeWeek of 2026-07-01: 53 positiveWeek of 2026-07-01: 13 negativeWeek of 2026-08-01: 44 positiveWeek of 2026-08-01: 9 negative
Weekly review counts (Steam review histogram). Positive above the line, negative below.

Players online

3271532026-08-07 00:00 — 175 players2026-08-07 08:00 — 191 players2026-08-07 16:00 — 241 players2026-08-08 00:00 — 195 players2026-08-08 08:00 — 231 players2026-08-08 16:00 — 272 players2026-08-09 00:00 — 166 players2026-08-09 08:00 — 246 players2026-08-09 16:00 — 284 players2026-08-10 00:00 — 192 players2026-08-10 08:00 — 166 players2026-08-10 16:00 — 217 players2026-08-11 00:00 — 157 players2026-08-11 08:00 — 195 players2026-08-11 16:00 — 231 players2026-08-13 00:00 — 153 players2026-08-14 07:00 — 213 players2026-08-15 15:00 — 327 players2026-08-16 23:00 — 239 players2026-08-18 07:00 — 223 players2026-08-19 14:00 — 255 players2026-08-20 22:00 — 203 players2026-08-22 05:00 — 225 players2026-08-23 13:00 — 327 players2026-08-24 20:00 — 253 players2026-08-26 04:00 — 198 players2026-08-27 13:00 — 249 players2026-08-28 19:00 — 234 players2026-08-30 03:00 — 243 players
Concurrent players, hourly average, last 30 days (census samples).

Price history

$24.99$9.992023-08-242026-08-302023-08-24 — best price $24.992023-11-03 — best price $22.492023-11-28 — best price $24.992023-12-21 — best price $22.492024-01-25 — best price $22.492024-02-22 — best price $24.992024-03-14 — best price $21.242024-03-25 — best price $21.242024-04-11 — best price $22.492024-05-27 — best price $24.992024-06-06 — best price $24.992024-06-27 — best price $19.992024-07-22 — best price $19.992024-07-30 — best price $19.992024-08-26 — best price $19.992024-09-26 — best price $17.492024-10-28 — best price $19.992024-11-27 — best price $16.242025-01-02 — best price $24.992025-02-13 — best price $14.992025-02-24 — best price $24.992025-03-20 — best price $24.992025-05-10 — best price $24.992025-06-18 — best price $17.492025-08-26 — best price $17.492025-09-25 — best price $24.992025-11-13 — best price $13.742025-12-03 — best price $24.992026-01-03 — best price $24.992026-02-02 — best price $14.992026-02-12 — best price $13.742026-03-19 — best price $14.992026-05-04 — best price $13.742026-06-25 — best price $12.492026-07-23 — best price $24.992026-08-30 — best price $24.99
Lowest recorded price across tracked stores, per day (census snapshots).

Attention

70152026-08-14 — 37 pageviews2026-08-15 — 70 pageviews2026-08-16 — 37 pageviews2026-08-17 — 23 pageviews2026-08-18 — 42 pageviews2026-08-19 — 22 pageviews2026-08-20 — 33 pageviews2026-08-21 — 27 pageviews2026-08-22 — 34 pageviews2026-08-23 — 25 pageviews2026-08-24 — 15 pageviews2026-08-25 — 19 pageviews2026-08-26 — 25 pageviews2026-08-27 — 34 pageviews
Daily Wikipedia pageviews (attention proxy, census-recorded).

Twitch viewers

1702026-08-28 11:34 — 0 viewers2026-08-28 12:34 — 0 viewers2026-08-28 13:34 — 0 viewers2026-08-28 14:34 — 0 viewers2026-08-28 15:34 — 0 viewers2026-08-28 16:35 — 0 viewers2026-08-28 17:34 — 0 viewers2026-08-28 19:34 — 2 viewers2026-08-28 20:34 — 5 viewers2026-08-28 21:34 — 17 viewers2026-08-28 22:34 — 10 viewers2026-08-28 23:34 — 6 viewers2026-08-30 09:34 — 0 viewers
Hourly Twitch viewers (census snapshots).

Completion

60+
achievements tracked
89.3%
earned "In the Isle's Shadow"
11%
median achievement earned by

Global achievement rates from Steam.

Details

WindowsmacOSLinuxSingle-playerSteam AchievementsSteam Trading CardsAdjustable Text SizeColor AlternativesCustom Volume ControlsMouse Only OptionPlayable without Timed InputSave AnytimeSteam Cloud2 DLC

4 supported languages: English, Russian, Simplified Chinese, Japanese

Console footprint

PlatformPlayers trackedCompletionTrophies/achievements
Steam (Steam)2,8070%95

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

Player tags

RPGCraftingLife SimStrategyTabletopCard GameLore-RichManagementSimulationExploration

Census log

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

Players also track

Star Control®: OriginsSurvivalistForgotton AnneWeapon Shop FantasyEternity: The Last UnicornUnbound: Worlds ApartCHANGE: A Homeless Survival ExperienceTorchlight III

Similarity via IGDB.

Reddit ↗Official site ↗