The Playability Number is not a review number (like what a gaming website or blog would post). It shows how much the game shares with what players would consider a ‘perfect’ game of the genre. The final number provided is not an average of the facets of Playability. The number is generated through a weighted formula designed to also account for the effect that one facet of play performing poorly may have on other experience of other facets. In our Playability Number, each facet has an effect on the two most closely related facets, which determines the final number. All of these factors mean that the Playability Number is often considerably lower than any review might be.