Common mistakes

Dice rules mistakes (Call of Cthulhu 7th Edition)

Misreads that change outcomes and how to fix them.

What goes wrong

Dice mistakes usually come from mixing systems (percentile vs pool, different critical rules, etc.).

Smallest fix that works
Use system-accurate dice tools and keep one quick reference open during play.
Rules topics
Longer explanations when needed.
System glossary
Terms and definitions.

Solve it with tools

Use checklists, references, and a single source of truth.