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.