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Book of Demons
Book of Demons is a Hack & Slash 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!
What players say
Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.
“What an endearing love letter to Diablo 1. It follows its inspiration closely, extremely closely at times, but at the same time introduces so many fresh ideas I haven't seen anywhere else that the game design reaches "genius" status in my book. Coupled with an adorable "paper…”
— a player, Steam review · 16 hrs played“The original Diablo is one of my top 5 games of all time and this is basically Diablo 1 in a Paper Mario style. I wasn't sure about having to walk along a fixed path through the dungeons but it actually works pretty well. The combat is fun and your character gets a lot of cool…”
— a player, Steam review · 17 hrs played“Scam game. Never meaningfully released with what the devs promised, then they changed the name to "Hellcard" and want you to pay twice.”
— a player, Steam review · 4 hrs playedPlayer activity
Monthly average concurrent players. Live count fetched 2026-07-24 00:15 UTC · history via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-07-24). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Past, Present, and Future (a.k.a Roadmap '25)
Hello everyone, happy New Year! It’s time for our yearly roadmap post. The previous year was tumultuous, for both the gamedev industry and us with the launch of Hellcard 1.0, technology changes, and t
Archduck Plushies! Petition open now!
The Archduck, often seen lurking next to adversaries in both Hellcard and Book of Demons. An innocent duck with the wrong friends? Or an evil mastermind, subtly pulling the strings from the shadows? N
Hellcard Bundle and 1.0 release soon!
As you might already know, Book of Demons continues in our next game, a co-op deckbuilder Hellcard. Which, coincidentally, is going to leave Early Access in the coming weeks. All the heroes you know f
Hellcard is launching on 16th February!
We went quiet for a while but for a good reason; the Hellcard's closed beta was raging behind the scenes. We had our hands full balancing and adding quality-of-life stuff to the game. At the same time
Czech language and Steam Deck update!
Good news everyone! First of all, the game now includes the Czech language! This is thanks to the excellent community translator who took the time to translate the game and worked with us to integrate
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-20.
| Genres | Action, Adventure, Casual, Indie, RPG |
| Player tags | Dungeon Crawler · Roguelike Deckbuilder · Hack and Slash · RPG · Deckbuilding · Singleplayer · Isometric · Action RPG · Dark Fantasy · Fantasy · Demons · Card Game (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Full controller support · Steam Trading Cards · Captions available · Steam Cloud · Stats · Steam Leaderboards |
| Languages | English * , Polish, French, Italian, Portuguese - Brazil, Russian, Simplified Chinese, Traditional Chinese, German, Turkish, Spanish - Spain, Bulgarian, Korean, Ukrainian * |
| Controller | Full support |
| Achievements | 202 |
| Estimated owners | 500,000 – 1,000,000 (SteamSpy) |
| Official site | http://www.return2games.com |
Minimum system requirements (PC)
Minimum: OS *: Windows 7, 8, 8.1, 10 Processor: 1.7 GHz Dual Core or Greater Memory: 2 GB RAM Graphics: 512 MB DirectX 9.0c compatible graphics card DirectX: Version 9.0c Storage: 1 GB available space Sound Card: DirectX 9.0c compatible Additional Notes: Controller Support