Diceless Role-playing Game

A diceless role-playing game is a role-playing game which is not based on chance: it does not use randomisers to determine the outcome of events in its role-playing game system. The style of game is known as "diceless" because most games use dice as their randomiser; some games such as Castle Falkenstein use other randomisers such as playing cards as substitutes for dice, and are not considered "diceless".

Proponents of this solution argue that in all game systems, decisions are ultimately made by the GM, and rolling dice merely slows gameplay. Opponents may perceive diceless systems as more arbitrary and lacking the feeling of real unpredictability; for example, the potential death of a character as a result of bad luck in a dice roll.