Has anyone tried modifying the rules of Eldritch Horror so you can play against two ancients at the same time? How was your experience?


  • Do I solve alternating or in parallel?


  • Do I take a sum or average of myths cards? (Mythos Deck Composition)
  • Do I buy one or two Mythos Cards?

Doom Token

  • Greater, average or lower to start?

Handicap combos

  • Extra Action?
  • Bonus for tests?
  • Acquire bonus?
  • At Arkham Nights 2016 there was a game held with two ancient Ones and 16 players.
    – tsuma534
    Commented Jan 17, 2017 at 13:11

1 Answer 1


No playtesting yet, but I was thinking about such variant.
Some initial thoughts:

  • I would sum up the doom of both AOs. If this total drops to 0, both AO's awaken.
  • The two respective mythos decks are shuffled: First stage of 1st AO with 1st stage of 2nd AO, and so on.
  • Each AO has one active mystery. "Advance the mystery" effects allow you to advance the either of these, but not both at the same time.
  • When having a Research encounter, you may choose from which AO's deck you'll draw.

The biggest dilemma for me is how to treat Cultists.

  • 1
    Treat cultists based on the omen - blue is for one and the red/green for the other
    – link64
    Commented Jul 29, 2016 at 1:25

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