No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $4.2M — a different platform, not this one.
No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $4.2M — a different platform, not this one.
Book of Demons is a Hack & Slash Deck-building hybrid in which YOU decide the length of quests. Wield magic cards instead of weapons and slay the armies of darkness in the dungeons below the Old Cathedral. Save the terror-stricken Paperverse from the clutches of the Archdemon himself! Procedurally Generated Dungeons Roguelike Mode for fans of extreme challenge 70+ different types of monsters, with different traits and custom mechanics Twitch and Mixer integration Monthly and all-time Leaderboards, 200+ Achievements Book of Demons is the first installment of Return 2 Games - a series of original mid-core titles, inspired by the early golden days of PC gaming. Cards and Deckbuilding It’s not a card game, but items, spells, and skills are all expressed as cards. The strategy lies in adapting your hand to each situation. Cards can be upgraded with runes and you can find many variants with diverse bonuses. Legendaries are the most epic but hard to acquire. Tailored sessions with Flexiscope Book of Demons respects your time. It features the Flexiscope engine which allows you to divide the game into sessions of any size. It even learns your pace of gaming and predicts the time to complete the next session. Unique Mechanics Simplified movement and fight mechanics is where Book of Demons differs the most from other hack & slash games. There is often not enough time to click-remove all of the obstacles such as monster shields , enemy spells , poison , or knocked cards , so timing, card selection and order of execution are critical. Hack & Slash in the world of Paperverse Book of Demons takes place in Paperverse , a world that exists entirely inside a pop-up book. It’s a tale of good and evil about saving the world from the ultimate devilry. Sounds familiar? Inspired by the dark and gloomy atmosphere of the first Diablo game, Book of Demons is part tribute part parody of hack & slash classics. Comfort of Gameplay Many Book of Demons features were designed with gameplay comfort in mind. Points of interest are marked at the top of the screen and get revealed once you get closer. Your character leaves footprints, which can be used to track your way back or notice paths already visited without opening the map. Challenging Endgame On average it takes about 10 hours to complete the campaign with a single class, but maxing out a character and mastering all of the higher Freeplay difficulty levels and Quests takes much longer. The Roguelike mode offers another level of challenge with permadeath, restricted healing and even more obstacles to overcome.
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.
For scale, across GOG · Trending · United States over the last 30 days: the 141 chart moves that followed a price cut of more than 20% went a median of 2 places away from #1, and the 6,571 moves with no price cut behind them went nowhere. 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
Procedurally Generated Dungeons
Roguelike Mode for fans of extreme challenge
70+ different types of monsters, with different traits and custom mechanics
Twitch and Mixer integration
Monthly and all-time Leaderboards, 200+ Achievements
Genres
Stats
How fast this game is gaining ratings — the activity signal available where a store publishes no sales or install numbers.
Measured from our own daily snapshots, not reported by the store. Deliberately not converted into sales: a one-tap rating's ratio to copies sold is unknown on this platform, and guessing it would be worse than leaving it out.
Sums Steam only; GOG, PlayStation, Xbox, Epic publish no volume signal, so the true total is higher by an unknown amount.
| Store | Price | Audience | Score | Chart | Est. revenue |
|---|---|---|---|---|---|
GOGYou are here | $6.25−75% | 275ratings | 80% | — | not modelled |
| $24.99 | 8Kreviews | 92% | — | $4.2M | |
| $24.99 | 238ratings | 78% | — | not modelled | |
| $24.99 | 150ratings | 88% | — | not modelled | |
| $24.99 | — | 76%* | — | 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.
Media
Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
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