A

polyhedron of one hundred faces. But what purpose could such an item serve?

A

die of course!

No

industry has benefited more from

polyhedra research than the

dice industry. Pen and paper

roleplaying games often require dice other than the standard

D6. Thus we have the

D4,

D6,

D8,

D12, and

D20, all

regular polyhedra (the only regular polyhedron in fact). Also, there's the less than regular

D10, which is like 2 five-faced pyramids stuck together.

As for the

D100, it's useful for dice rolls requiring a

percentage. The more common method is to roll 2D10 and multiple one of the die rolls by 10 resulting in a number between 0 and 99.

Nevertheless, some roleplayers just aren't satisfed with this system, and so a D100 is the solution. Using a D100 probably has more to do with the

coolness factor rather than any supposed increase in the validity of the

roll.

Yes, 100-sided dice do

exist, and they take half an hour to stop rolling.