Fudge Core Rules
A free-form¸ generic¸ minimalist role-playing ""engine"". At times¸ this is intentionally more of a ""how to design an RPG"" guide than a pre-made game. There are no fixed attributes or skills¸ and multiple options are provided for almost everything. There are sample psionics¸ magic¸ and clerical magic systems provided with the core rules. The Expanded Edition provides a pre-determined fantasy role-playing game with fixed attributes¸ skills¸ and new magic system. The Anniversary Edition provides a host of other pre-made and/or optional systems: a new magic system (""Degrees of Magic"")¸ superhero rules¸ cybernetics¸ netrunning¸ vehicles¸ dogfighting¸ detailed weapons¸ and two alternate martial arts systems. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"