Popular role-playing games such as
Dungeons & Dragons used polyhedral dice, and Zocchi became interested in the design and manufacture of them. Most dice, according to Zocchi, did not roll accurately because of flawed manufacturing processes, causing them to favor certain numbers. Zocchi believed that this was because major dice manufacturers smoothed out the straight edges of their dice in machines much like
rock tumblers. The result was that the dice, even if they were originally molded evenly, became uneven and unbalanced. Zocchi demonstrated the imperfections of these dice with statistical results and with photographs of uneven die edges, faces and
vertices. Zocchi decided to manufacture perfectly accurate dice with sharp edges, and founded a company,
Gamescience, to produce them. He also invented and produced several "non-standard" dice including a 3-sided die, a 5-sided die, a 14-sided die, a 16-sided die, and a 24-sided die.
Zocchihedron Zocchi also invented a 100-sided die, dubbed the
Zocchihedron. However in January 1987,
White Dwarf published a letter from Jason Mills of Manchester, who shared the statistical results of 5164 rolls that proved that numbers 1–10 and 91–100 were less likely to be rolled. This was because when Zocchi numbered the die, he clustered these numbers at the north and south poles of the die, where the faces were slightly different sizes than the faces around the equator of the die. As soon as the article came out, Zocchi adjusted the numbering on the die to ensure that numbers were randomly scattered around the die rather than being clustered together. This revision prevented the bias against very high and very low numbers. The original die had been white with black lettering. To differentiate between older, uncorrected dice and the newer "truer" dice, Zocchi manufactured new
Zocchihedrons in a variety of other colors. ==
How to $ell Your Wargame Design==