This is part of an ongoing project to collect rules for interesting card, dice, word and pen-and-paper games that can be
explained in no more than 100 words. Any ambiguities can be rehydrated through common sense (eg. if a game uses
points but specifies no winner, the most points win).
The Reader selects an obscure word from the dictionary, reads the word aloud (checking that no player knows its meaning) and copies the definition onto a piece of
paper. The other players write their own definitions on identical papers. The Reader collects the papers to read aloud in a random order. Going clockwise, other
players vote aloud on which definition they believe to be correct. Then: score 1 for selecting the true definition and 1 for each player who selected your false
definition. If nobody guessed correctly, the Reader scores as many points as players. Take turns to be Reader.
Take an empty crossword grid. Players take turns to write a word or crossword-suitable phrase into an empty clue space. First move must be into one of the shortest spaces, subsequent moves must cross at least one existing word. The first move scores 2 points per letter in the word or phrase; subsequent moves score 1 point per letter, multiplied by the number of words the move crosses. Continue until both players resign; the first to resign gets a 10 point bonus.
by David Parlett
Prepare as many cards as players: two "Mafia", one "Detective" and the rest "Citizens". A Moderator deals these out secretly then moderates repeating Night and Day phases. Night: Players close their eyes, the Moderator asks the Mafia to open theirs, silently nominate a player, and then close their eyes. Moderator asks Detective to open their eyes and indicate a player, and gives a thumbs-up if they are Mafia. Day: Everyone opens their eyes, the Mafia-targeted player is eliminated and players vote on one player to eliminate. Mafia lose if eliminated, and win if only two non-Mafia remain.
by Dimitry Davidoff
Rule 1: Going clockwise, players take turns to roll a die and add the result to their
score, then propose the enactment, repeal or amendment of any rule. Rule
2: When a proposal is made, every player must vote for or against it;
if the vote is unanimously in favour, the proposed change takes immediate effect, otherwise the proposer loses 10 points. Rule 3: If players disagree about rule interpretation, the player to the left of the current player resolves the dispute. Their decision is binding. Rule 4: The first player to reach 100 points wins.
by Peter Suber (adapted)
Players start with identical pools of coins (standard is 4 pennies, 3 nickels, 2 dimes and 1 quarter). On your turn, play one coin from your pool to the middle and (if you can) take
back change up to one penny less than the value of the coin you played. If your pool is empty at the end of your turn, you are eliminated.
by James Ernest
Pick any medium (coins, words, drawn shapes, etc) for constructing small, unambiguous "koans". The Master picks a secret rule (eg. "a circle surrounds a square"), and builds one koan that fits the rule and one that doesn't, marking which is which. Students take turns to: build a koan, and optionally call for all Students to privately guess whether it fits the rule. The Master marks whether the koan fits, correct guesses earn 1 point. On your turn, you may spend 1 point to guess the rule; if wrong, the Master builds a koan that disproves it; otherwise you win.