A conversion is taking elements from one game and putting them into another. Types include: * System to system: Taking a game mechanic from one game and adapting it to another. * Setting to system or setting conversion: Using the setting for one game with the rules to another. * Setting to setting or stealing stuff: Using story elements from one game in another game. Conversion necessarily includes a certain amount of house rules to make it work. In miniatures, conversion means modifying a figure.