Fudge is a rules-light role-playing game, concentrating on role-playing rather than endless dice rolls and tables and similar detailed game mechanics. It also uses words rather than numbers to describe character traits.
For example, a character might be a Great Swordsman rather than a 14th level fighter. Combined with simple action resolution, Fudge's descriptive nature makes ideal it for novice players. Fudge is also flexible enough to satisfy experienced role-players.
There are no artificial limits placed on character creation; any character the player can imagine can be described in Fudge terms. (Of course, Fudge encourages players to consult with their game master when designing characters, since the GM has final say over whether or not a character is acceptable in a given game.)
The basic Fudge rules contain no campaign world information (except for a few examples). But the game's flexibility allows it to be easily used with nearly any other role-playing game's campaign world - and, of course, with game masters' own personal creations.