Call of Cthulhu
7th EditionInvestigate cosmic horrors and try to keep your sanity
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Diced100
System FamilyBRP
Cost$$
LicenseChaosium Fan Material Policy
PublisherChaosium
Year2014
Complexity
Medium
Accessibility
Medium
Community
High
Core Mechanic
Roll d100 equal to or under your skill percentage. Success tiers at half (Hard) and one-fifth (Extreme) of the skill value. Bonus and penalty dice adjust the tens digit. Failed rolls can be pushed for a second attempt at greater risk.
Best For
Investigation-driven horror where combat is deadly and sanity is fragile. Great for one-shots.
Highlights
Sanity system mechanically reinforces horror tone. Intuitive percentile skill system with tiered success levels. One of the largest published scenario libraries in the hobby.
Considerations
Chase rules add complexity with limited payoff, 46-skill list requires point allocation across multiple categories, sanity spiral can remove player agency in extended campaigns