Jonathan Tweet explains how, unlike highly narratively structured games such as The Call of Cthulhu, the free-form, character-focused Everway includes a matrix that allows for the creation of coherent characters and productively constrains the otherwise open-ended game-play.
The source is the essay-review on www.electronicbookreview.com written by Jonathan Tweet.
Everway is a free-form tabletop fantasy RPG in which players take the roles of heroic figures that travel among countless parallel worlds. Action resolution uses cards drawn from a Tarotlike deck rather than dice. Character stats determine the likely outcome of an action, and the card draw provides a conceptual result that the gamemaster interprets creatively to determine the actual result.
The quote was rewritten directly from the essay.