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About Book of Demons
Book of Demons is a hack‑and‑slash action game set inside a pop‑up book world called Paperverse. Players wield magic cards as weapons, confronting procedurally generated dungeons beneath an Old Cathedral while aiming to stop the Archdemon. The title offers a flexible session system, a roguelike mode with permadeath, and extensive leaderboards. It supports full controller input on Windows, macOS, and Steam features such as achievements and cloud saves.
01 / THE GUIDE
Flexiscope Session System
Flexiscope lets players split the game into sessions of any length, adapting to personal schedules. The engine also predicts how long the next session will take based on past play.
Because session length is player‑determined, the same dungeon can be tackled in short bursts or extended runs without altering core content. This flexibility is useful for balancing time constraints with the game's challenge.
- Try a brief session to test new card combos before committing to a longer run.
- Observe the predicted time to gauge whether a planned session fits your available play window.
02 / THE GUIDE
Card‑Based Combat
All items, spells, and skills appear as cards, and players must select and order them quickly during fights. Timing and card choice are crucial because obstacles like monster shields and enemy spells can appear rapidly.
Cards can be upgraded with runes, and variants provide diverse bonuses. Legendary cards exist but are described as hard to acquire, adding a layer of collection.
- Upgrade frequently used cards with runes to improve reliability in tight encounters.
- Keep an eye on card variants that may offer situational bonuses against specific monster traits.
03 / THE GUIDE
Roguelike Mode
A separate roguelike mode introduces permadeath, limited healing, and additional obstacles, raising the difficulty beyond the main campaign. This mode is intended for players seeking extreme challenge.
The mode layers stricter survival constraints onto the game's challenge, making each decision more consequential.
- Treat early encounters as practice for the harsher constraints of roguelike runs.
- Conserve healing items early to avoid being forced into a fatal situation later.
04 / THE GUIDE
Leaderboards and Achievements
Book of Demons tracks performance on monthly and all‑time leaderboards, allowing players to compare scores globally. Over 200 achievements are available, rewarding various in‑game milestones.
Achievements and leaderboard positions are provided through Steam services, alongside the platform’s stat and cloud features.
- Review achievement lists to identify optional challenges you might enjoy.
- Use leaderboard rankings to gauge how your session lengths affect overall performance.
05 / THE GUIDE
Full Controller Support
The game includes full controller compatibility for Xbox, DualShock, and DualSense devices, as well as Steam Input API support. This enables play without a keyboard or mouse if preferred.
Controller support extends to remote play on TV, allowing the game to be enjoyed on larger screens via Steam’s remote play feature.
- Test both Xbox and DualSense controllers to see which button layout feels more natural for card selection.
- If playing on a TV, ensure remote play latency is low for precise timing in combat.
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