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Download on Google Play- One player (the dealer) secretly invents a rule for valid card plays.
- Shuffle 2 standard decks together and deal 14 cards to each player.
- The dealer plays one starter card face-up.
- Play a card you believe follows the secret rule.
- Correct cards join the main line; rejected cards go to a sideline with penalty draws.
- Study accepted and rejected cards to deduce the pattern.
- Declare yourself Prophet if you think you know the rule to judge plays instead of the dealer.
- Players score fewer points for fewer cards remaining in hand.
- The Prophet scores a bonus if they judge correctly.
- The dealer scores based on how balanced the difficulty of their rule was.
Rules
Eleusis is a unique inductive logic card game where one player invents a secret rule for card play, and the other players must deduce it through experimentation. It simulates the scientific method, making it both a game and an intellectual exercise.
Objective
As players, deduce the secret rule governing which cards can be legally played. As the dealer (God), create a rule that is discoverable but not trivially obvious.
Setup
- Players: 4 to 8 players.
- Deck: 2 standard 52-card decks shuffled together.
- Roles: One player is the 'dealer' (God) who creates the secret rule. All others are players.
- Deal: Each player receives 14 cards. The dealer plays one starter card.
Gameplay
- Playing: On your turn, play a card you believe follows the secret rule.
- Correct Play: If the dealer accepts it, the card joins the main line of play.
- Incorrect Play: If rejected, the card goes to a sideline and you draw extra penalty cards from the deck.
- Deduction: Study the pattern of accepted and rejected cards to figure out the rule.
- Prophet: A player who thinks they know the rule can declare themselves 'Prophet' and judge plays instead of the dealer.
Example Rules
- 'Play a card of the same color as the previous card.'
- 'Alternate between odd and even numbers.'
- 'The card must be higher if the previous was red, lower if it was black.'
- Rules can be as simple or complex as desired.
Tips and Strategies
- Test hypotheses systematically — play cards that distinguish between possible rules.
- Pay close attention to which cards are rejected, not just which are accepted.
- As the dealer, make your rule complex enough to challenge but fair enough to be discoverable.
Tips & Strategy
Think like a scientist: form a hypothesis, test it with a specific card, and refine based on the result. Avoid random guessing.
The key is distinguishing between hypotheses. If two possible rules both explain accepted cards, play a card that would be valid under one rule but not the other.
Trivia & Fun Facts
Eleusis has been used as a teaching tool in university courses on the philosophy of science and scientific methodology.
What unique role can a player assume in Eleusis if they believe they have figured out the secret rule?
History & Culture
Eleusis was invented by Robert Abbott in 1956 and later refined in 1977 as New Eleusis. It is named after the ancient Greek mystery cults at Eleusis.
Eleusis occupies a unique niche as both a card game and an educational tool, demonstrating how hypothesis testing and inductive reasoning work.
Variations & House Rules
New Eleusis (1977) adds the Prophet role and refined scoring. Express Eleusis uses simpler rules for quicker games.
For beginners, use simple rules (same color, alternating odd/even). For experts, use rules involving multiple previous cards or mathematical operations.
