Book of Demons is a Action, Adventure, Casual game from Thing Trunk with a 89% positive Steam review signal. Indie Lantern indexes it for players browsing by relaxing, single-player.

Game snapshot
- Developer
- Thing Trunk
- Release year
- 2018
- Playtime
- Varies by player
- Price
- $6.24
- Review signal
- 89% positive
Screenshots






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
macOS
- Minimum
- OS: OSX 10.12+ Memory: 2 GB RAM Graphics: Open GL 3.3+ Compliant Storage: 1 GB available space Additional Notes: No Controller Support
From Steam reviews
Review notes
Book of Demons is worth a closer look if you want deckbuilding, boss rush, strong atmosphere, and exploration.
Best for players who want strong atmosphere, emotional story, deckbuilding, and boss rush.
Check more carefully if you dislike repetition or grind.
deckbuilding
Play styleCard choices, deck shape, and synergies matter.
boss-rush
Play styleA major part of the game is learning and beating standout fights.
grindy
FrictionThe loop may feel repetitive if you dislike grind.
strong-atmosphere
ToneThe mood, place, and presentation carry a lot of the experience.
exploration
Play styleThe draw is moving through spaces, discovering details, and learning the world.
replayable
FitThe structure gives reasons to return rather than finish once.
controller-friendly
FitController, gamepad, or Steam Deck play comes up as a plus.
emotional-story
ToneThe story is framed as affecting rather than just plot-heavy.
Steam review snapshots
This randomization is partly controlled by you, because if you want to progress through the game, you can set how much progress…[h1]What kind of game is Book of Demons?[/h1] The game's store page, especially the pictures, may be misleading to some people, possibly…Replaying storyline bosses with keys is safe, even on roguelike mode.I'm sure that the balance of the game could have been handled a bit differently, because this type of spellcasting really ruined…Why it fits
Good fit for players who want deckbuilding, boss rush challenges, exploration, and a strong atmosphere. Choose Book of Demons for its deckbuilding, exploration, boss rush fights, emotional story, and replayable structure.
Who might skip it
Skip it if you dislike repetition or grind.