
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?
Modeled estimate, not a reported figure. How we estimate →
Prices
The United States storefront in every case, so this compares stores and not countries.
Prices
Each in the currency that store quoted — not converted: the gap between two rows is the publisher's pricing, not an exchange rate.
Every market we collect.
Discounts
Every price cut of more than 20% we have observed, in each market that quoted one, with this game's chart position on either side of it. These are episodes, not a model: a sale is one event, and one event cannot tell you what the next one will do.
Reviews, worldwide (the counter carries no country): 56.83/day in the week to Jul 17 → 3.29/day in the week after.
For scale, across Steam · Top Sellers · Poland over the last 30 days: the 21 chart moves that followed a price cut of more than 20% went a median of 12 places towards #1, and the 2,501 moves with no price cut behind them went 1 away. One store, one chart, one country — it is the only place we have enough observations to say even that.
Prices outside the United States have been collected since 6 August 2026 and chart positions since 19 July 2026, so a cut older than that has no market to compare and a market that joined later has no history yet. Nothing here is converted between currencies.
About




Sums Steam only; GOG publishes no volume signal, so the true total is higher by an unknown amount.
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
SteamYou are here | $24.99 | 4.5Kreviews | 89% | — | $4M |
| $24.99 | 72ratings | 88% | — | not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Updates
Build ids and update times come straight from Steam's PICS — the same source SteamDB reads. Patch history grows as we record new builds.
Engagement
Reviews
Themes across 878 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
玩法就是大型消消乐,但是这几十块钱冲着文案什么都值了.JPG
It's great, I love it. In terms of overall enjoyability, I think I prefer CS since I still need to get an ending with BoK. Problem is, when you leave for a long time and return on your 1 month old save, you just feel overwhelmed and a) leave the game b) you just wanna restart from the beginning. Otherwise nothing else to say. Amazing lore. Peak writing (altough sometimes complicated when english is not your native language)
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $4M | 8.2K | 93% | $19.99 | |
| $4M | 8.1K | 89% | $29.99 | |
| $4M | 19.1K | 82% | $9.99 | |
| $4M | 4.1K | 79% | $24.99 | |
| $4M | 11.6K | 97% | $14.99 | |
| $4M | 10.8K | 89% | $14.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $8.4M | 14.2K | 80% | $19.99 | |
| $290.6K | 809 | 71% | $14.99 | |
| $90.1K | 216 | 74% | $18.99 | |
| $32.3K | 89 | 82% | $11.99 | |
| $1.2K | 6 | 83% | $5.00 | |
| — | 0 | — | — |
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, Russian, Simplified Chinese, Japanese
Hours played at review time, across 880 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
ha ha ha necronomicon go brrr
oui
現在日本語化もされていますし、cultist simulatorのようなわからん死要素もないです。 また、BGMがめちゃくちゃいいのでおすすめです。
Man I love this game...
It takes you a minute to get into the swing of things but once you're in the middle of the game, it's fantastic.
在下ak老粉,无光之海,无光之空,密教模拟器和司辰之书重度玩家。 虽然节奏拖沓对于多周目玩家来说确实是一个痛点,但是司辰之书的Roleplay元素是我非常喜欢的,出身选择以及结局差分都很有代入感。去伊苏是我从玩密教模拟器了解秘史开始一直以来的梦想,有一种去耶路撒冷朝圣的神圣感,感谢ak给我此次机会圆梦(泪目)
база
If you enjoy note taking or have a good memory its a great time.
Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.