Book of Demons is a Hack & Slash deckbuilding 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!
Recent Reviews:
Very Positive (19) - 94% of the 19 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (1,737) - 93% of the 1,737 user reviews for this game are positive.
Release Date:
Jul 28, 2016

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Book of Demons has been in development for roughly three years and at this point spent over a year in the Early Access. All the core features are already in place, we’ve gathered a ton of great feedback from our close-knit community that helped us form the game to the current state. More feedback from a fresh point of view, your point, is always welcome!”

Approximately how long will this game be in Early Access?

“This will depend on the feedback from the community, but based on the current state of the game we are fairly certain that it will be ready for final release in the second half of 2018.”

How is the full version planned to differ from the Early Access version?

“The current state of the game reflects well the core features that will be present in the full version. We will now focus on bringing in planned features, polishing the gameplay, balancing and fixing the occasional bugs.”

What is the current state of the Early Access version?

“With all the core mechanics, the whole campaign, and the Freeplay mode in place the game can be played from start to end. It lacks some of the content like some skill cards or enemies, and a lot of sounds. We would also like to give it more polish improving effects and balance based on player’s feedback. We also have a detailed roadmap outlining main features that will make it into the game before launch in this thread.”

Will the game be priced differently during and after Early Access?

“We haven’t decided yet.”

How are you planning on involving the Community in your development process?

“We have added a special feedback widget to the game, so any player can send feedback any time while playing. Apart from this we frequently communicate through Twitter, Facebook and we plan to communicate even more through our Steam Community Hub, videos and development blog, to keep the players up to date. Our community is incredibly important to us and we will consider all feedback provided; please keep in mind, it will not always be possible for us to implement all suggestions or to respond to every comment individually.”
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Downloadable Content For This Game


Recent updates View all (46)

October 11

Mac version is live! Along with bugfixes and stuff.

The Mac native port is ready and went live on Steam moments before this post was published. The game fully supports Steam Cloud on both Windows and Mac, so you can now enjoy it on the system you prefer whenever you feel like switching.

Other notable changes in this update
The Mage has a new voice. Due to some unforeseen circumstances, we had to recast the Mage. We took that opportunity to find a great actor and we hope you will enjoy his work as much as we do.

Looking ahead
We are now testing and tuning new cards and streamer support features. Over the next month, we will continue to add remaining content and next month we expect to have the final build candidate ready on the test branch.

In my free time, I have been also tinkered with support for Logitech RGB hardware (as you probably figured out adding RGB support is a hobby of mine). You can expect Book of Demons to light your Logitech devices soon.

We are also working on Linux native port, but we his some last minute snags. However, the game works well in Steam Play so if you are on Linux and can't wait for the native port check it out. Also, consider wishlisting with store set to Linux. That way Steam might whitelist it for Proton and save you some hassle.

Full changelog
Version 0.98.17491+ 11th October 2018
  • Mac native version available
  • Improved visual effects for Archdemon gate opening sequence
  • Removed duplicate character voice over during Archdemon fight
  • The mage has now a new voice
  • Fixed: obsolete card variant combinations were not always replaced by new ones
  • Added random cameo skeleton encounter in Hell
  • Fixed: score counting sound would sometimes play during avatar unlock sequence
  • Bosses will now have jingles
  • Normalized card range tooltips (from numbers to descriptive terms)
  • Added more sounds for spiders
  • Added support for clicking in-town crows on a controller
  • Crows will now reset after the achievement is unlocked
  • Prepared backend for new cards
  • Improved exploration and movement tutorials
  • Fixed multiple typos
  • Added new supporters' names to credits

As always,
Stay safe in paper dungeons :archduck:
3 comments Read more

September 6

Major sound and voices update!

It is time for the September's major update. Let's quickly run through all the new stuff.

This update adds over 450 new sounds and remastered version of selected old ones. Many cards get their own sound and dungeons should sound more lively. Finally, the game sounds like we wanted it to sound!

Aside from a lot of new sounds we are also adding over 300 new lines of spoken dialogues and one-liners. Expect all characters to get a lot more chatty and crack occasional jokes. They will comment on fights and events in the game.

More card variants!
Many of you asked for this feature so we ironed out a few code quirks and now you will be able to find rare magical cards with two properties. And yes, left and right winged cards are possible. Not only that, occasionally a card with three properties can be found.

And disenchantable too!
But wait, there is more! Since this boosts the number of cards that can be found by a few thousands we also added card disenchanting. For a modest amount of gold, you can destroy a variant you have no use for to get back a rune card.

Roguelike mode is out of beta
After three months in beta, we are satisfied with the general stability and balance of the roguelike mode, which is why it's time for it to exit the cocoon. This doesn't mean we won't be adjusting minor stuff of course, but gameplay wise roguelike mode offers the unique permadeath experience we hoped for.

Full changelog
Version 0.96.17156+ 6h September 2018
  • Magic cards now can have up to three properties
  • Magic cards can now be disenchanted into Rune cards
  • Added notification when the player has found all common cards in the game
  • Added over 450 new sounds
  • Added over 300 new lines of spoken dialogues
  • Added a few new easter eggs
  • Skipping cutscenes in the dungeon now requires holding a key down for 1.5 seconds to avoid accidental skipping
  • Fixed Skeleton Belt's bonus values when browsing unequipped potion card variants
  • Added in-game disclaimer about tutorials. Shown on the first dungeon entry.
  • Amulet magical bonuses (like passive health bonus) will work in Roguelike mode regardless of the target
  • Score for badges earned will now be adjusted for the game size
  • Fixed timing and visual effects for achievements awarding animation
  • Fixed an issue with Archdemon Sweep skill triggering after loading a game saved when fighting him
  • Fixed Cook not saying his lines on 3rd mastering level
  • First card dropping on Roguelike can't be Town Portal, that was cruel
  • Improved and extended tutorials
  • Reworded Roguelike low gold warning
  • Made crows more explodey
  • Fixed a bug where a random variant was destroyed upon death on higher difficulty modes instead of equipped one
  • Fixed a rare crash related to crows singing
  • Added new "Ready for magic" achievement
  • Added new "Ready for stories" achievement
  • Added new "A-maze-ing!" achievement
  • Added new "Don't Die Hard" achievement
  • Added new "Master Chef" achievement
  • Added new "Craving Battle" achievement
  • Added new "Golden pot" achievement
  • Added new "1 step back" achievement

    As always,
    Stay safe in the dungeons :archduck:
22 comments Read more
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“Nostalgia without disappointments, frustrations and huge time investments - that’s the ambitious goal of Book of Demons, at once a parody and a tribute to the original Diablo, made in cute paper cut-out graphics.”
Rock Paper Shotgun

“Book of Demons aims to fuse the strategy and depth of Diablo with the style and charm of Paper Mario by using a unique movement and combat system, more accessible action-RPG mechanics, and a fair dose of humor intertwined with its dark theme.”
Game Informer

“Book of Demons is bound to entice newcomers to the genre as well as a long time action RPG fans who have been longing for a different kind of dungeon crawler.”


About the Supporter's Pack

To learn more about the Supporter’s Pack click here.

If you already have Book of Demons in your library and want to upgrade to the Supporter’s Pack version, please purchase the Book of Demons to Supporter's Pack Upgrade. This product only works for owners of the game. If you wish to support us and buy the game and Supporter’s Pack as one, please purchase the Return 2 Games Supporter Pack.

About This Game

Book of Demons is a Hack & Slash deckbuilding 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
Xbox and Steam controller support
3 underground realms and epic Quest Boss battles
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.

System Requirements

Mac OS X
    • 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
    • OS: OSX 10.12+
    • Memory: 2 GB RAM
    • Graphics: Open GL 3.3+ Compliant
    • Storage: 1 GB available space

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