Review · Action · PlayStation 4 · Xbox One · Nintendo Switch
Book of Demons
By the LumiKin editors
Reviewed: 01 May 2026
PlayStation 4 · Xbox One · Nintendo Switch · PC
SONKA · 2018
LumiScore
64/100
Good
Book of Demons is an action RPG that develops strategic thinking, adaptive challenge, and problem solving through card-based combat and dungeons.
Growth (BDS)
49
Risk (RIS)
6
Daily limit
120min
Age guidance
13+
Developmental benefits
| B1 | Cognitive | 0.74 | |
| B2 | Social-emotional | 0.03 | |
| B3 | Motor | 0.55 | |
Book of Demons offers significant cognitive benefits through its strategic card-based combat and procedurally generated dungeons, fostering problem-solving, strategic thinking, and adaptive challenge. The Flexiscope™ system promotes healthy play habits by allowing players to customize session length, making it accessible for short playtimes and preventing extended, unplanned sessions. Motor skills like hand-eye coordination and reaction time are also developed through its hack & slash gameplay.
Design risks
| R1 | Dopamine pressure | 0.13 | |
| R2 | Monetization | 0.00 | |
| R3 | Social risk | 0.00 | |
Risks are minimal, with no monetization pressure, social risks, or significant dopamine manipulation. Content risks are moderate for violence and mild for suggestive themes and language, consistent with its Teen rating. The game's design actively mitigates engagement manipulation through its Flexiscope™ system.
Heads up
- Monthly spendTypical real-money spend by engaged players: $0–0/mo.