Gloomhaven Perk Calculator

This project is intended to help build your Gloomhaven character by showing you how various perks affect the statistics of your modifier deck.

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Currently the following stats are calculated:

  • Card Probability - The chance that a given number card will be drawn
  • Deck Reliability - The chance that your attack damage will be affected positively, negatively, or not at all
  • Cart Effect Probability - The chance that a given effect comes into play during your action
  • Average Damage - The average damage of an attack given a starting base damage
  • Shuffle Probability - The probability that the deck will be shuffled on the nth action