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Cards For Science is a solitaire card game where you must work out the secret rule. The rule decides which card can be played next, so play cards to test each rule, then guess correct one to win.

Why are these cards "for science"? To win the game you have rules and try to break them. To do science you form competing hypothesis (or rules) and try to disprove (or break) them. The difference is that players try to discover the rules of the game but scientists try to discover the laws of the universe. Since the universe is complicated lets use playing cards for practicing science.

For example, you have these cards: 🂢, 🂣, and 🂴. You have two rules but only one is true.

"The next card must be higher" "the next card must have a different suite"

Are these rules both valid? No because one rule has already been broken. The second rule says we can't have two clubs in a row and we have a two of clubs followed by a three of clubs. That leaves us with rule one, which we guess is the right rule. Correct!

This is a pre-release.

Credits

Rules

Guess the rule correctly to win the game

The rule determines which card can be put down next

Prove or disprove rules by testing next cards

But putting down an incorrect card decreases your score by 2 and gives you 2 new cards.

Empty your hand to increase your score.

Every game will have a random rule chosen from around 300 rules

Hints cost you 150 points.

At zero points you lose the game.

This game is inspired by Eleusis by Robert Abbott and John Golden's Eleusis Express.

Hints:

Try to disprove rules, those which remain must be the truth

Don't be afraid to reveal the rule hints

Don't spend too much time thinking before 6 cards have been played.

If this rule is too hard restart the game to get a new rule

Cards and values