Book of Demons
Released Dec 2018
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!
79% positive · 9,451 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $24.99
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Evaluation
Book of Demons launched out of Early Access on December 13, 2018. After launch, the developer continued with post-launch updates: a Card Sets feature patch in June 2019, and an October 2021 update that addressed bug fixes and quality-of-life improvements. All three DLCs — the Supporter's Pack, Collector's Content, and Dungeons & Streamers — have been released.
The most informative recent communication is the developer's January 11, 2025 yearly roadmap post, which covers the studio's full slate of projects. Book of Demons is addressed briefly: the developer mentions having privately experimented with rewriting the game to use free movement instead of path-bound movement, describing it as a personal tinkering project. Crucially, they conclude: "Not sure if we are going to do anything with that... The changes are too fundamental to be incorporated into the core game's code." This is not an announcement of new content — it's a developer sharing a curiosity project with no commitment to ship anything.
The studio's active development focus is squarely on Hellcard (which completed its content roadmap with modding support in early 2025) and new unannounced projects. No updates, patches, roadmap items, or DLC are planned for Book of Demons. The October 2021 patch is the last substantive update to the game, and no post-launch update pattern has resumed since then. Book of Demons appears to be a complete, finished game at this point.
Evidence
Developer's 2025 roadmap addresses Book of Demons: the developer privately experimented with rewriting it to use free movement but explicitly states 'Not sure if we are going to do anything with that' and notes the changes are too fundamental to incorporate into the existing game. No content plans are announced for Book of Demons.
Book of Demons exits Early Access with 16 new cards and the Collector's Content DLC. Developer notes this is 'not the end of the road' and promises a post-launch roadmap.
Content
3 of 3 released · no outstanding content
Media
Details
Developer
Publisher
Thing Trunk
Achievements
202
Platform
Windows, macOS
Controller
full support
Steam Deck
Playable
Players
Single-player
About this game
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!
Procedurally Generated Dungeons Roguelike Mode for fans of extreme challenge 70+ different types of monsters, with different traits and custom mechanics Xbox and Steam controller support Dungeons & Streamers - Twitch and Mixer integration Monthly and all-time Leaderboards, 200+ AchievementsBook 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.
Dungeons & Streamers
Are these done yet?
Last evaluated Jun 27, 2026
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