[3] Like Torg, the Masterbook system utilizes two complementary forms of in-game conflict resolution: a unified dice mechanic, which is based on a roll of two ten-sided dice, and a game-specific deck of cards (the MasterDeck, similar to the Drama Deck in Torg) that is used to influence random number generation, character actions, and the game's plot.

Masterbook is a 176-page softcover book that was designed by Ed Stark, with interior art by Paul Daly, Jamie Lombardo, Ron Hill, Karl Waller, and Brian Schomburg, and cover art by Stephen Crane.

[note 1] The 17 red Subplot cards are used immediately by the Game Master to create a random event or encounter.

He did find several strong elements, including "a well-written text, an intriguing selection of skills, [and] a clever use of cards."

And he lauded the included card deck, which he found "inventive, fun to use, and in contrast to the rest of the rulebook, blessedly succinct."

He concluded by giving the book an average rating of 4 out of 6, saying, "even with its flaws, the Masterbook system remains a solid, versatile game with strong characters and clever concepts.

There were several licensed properties released using the Masterbook, but only Bloodshadows and World of Indiana Jones found success.