Diceless role-playing game

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A diceless role-playing game is a tabletop role-playing game (TTRPG) which is not based on chance because it does not use randomizers to determine the outcome of events. The style of game is known as "diceless" because most TTRPGs use dice as a randomizer. However, some games use other randomizers such as playing cards instead of dice, and these are not considered "diceless."

One commentator described the introduction of diceless TTRPGs in 1991:

"They went 'diceless,' creating a rules system where everything was worked out by the Game Master via numerical comparisons and other (non-random) techniques. Amber Diceless (Phage Press) created quite a stir, and the great diceless debate had begun in full force. A debate that, ultimately, the dice fans would apparently win, at least in the marketplace."^[1]