And it still fits on a d100!
There are 13 more solids with equal faces and vertex (but not equal edges) https://en.wikipedia.org/wiki/Catalan_solid but none of them has 100 faces (It looks like a nice project for 3D printing.)
You can cut the corners, but now the faces are different and ensuring all the faces have the same probability is a nightmare. Some info in https://en.wikipedia.org/wiki/Truncation_(geometry)#Uniform_... (This include the soccer ball.) (I have no idea if this include the D100.)
You also can "cheat" and use https://en.wikipedia.org/wiki/Teetotum that allows any number if you don't care too much about the polyhedral property.
Any even number dX can be made as a fair die as a bipyramid or trapezohedron. https://en.wikipedia.org/wiki/Trapezohedron These would be the only fair face-symmetric d100s. The standard d10 is this, and you sometimes see a d14 or d18 or something like that constructed this way. It becomes impractical with very thin faces past 20 or so. An odd-numbered fair die is also possible by using one twice as big and duplicating the numbers (like 1-5 twice on a d10.)
I also read a book about games from ca 1880 and it described 12-sided dice (the usual one, numbered 1-12) as if that was a thing some people used for playing games, but none of the games described in that book used them and I also have no idea about other old games using 12-sided dice.
Heck, many specimens of the last two are inventions, that are insignificant as a % of species but are in the worldwide top by biomass.
It's quite difficult to leave the anthroposphere in much of the world.
* dice: exist for thousands of years
* me: what if these had 100 sides?
* d100: *invented*
A better term would be "creator", because actually creating a 100-sided die that that rolls nicely and each face being equally likely is a lot more difficult than imagining one.
There is no 0% in d100/d-percentile rolls. Every "how to interpret these dice" paragraph in games which use them will tell you to interpret 0-0 on 2d10 as 100, not 0. Or, hypothetically (but i don't recall having ever seen this), they'll have a stated range of 0 to 99 (inclusive). Either way, the numeric range spans precisely 100 digits.
Love that game, but it is a bit distracting that probabilities feel one-off. Rolling 5 or lower to hit is 60%, not 50%. And when rolling 2d10 the result is 0-18, not 2-20.
So the fact there is no 0% (0 is interpreted as 100) is necessary because if your modifiers are giving it 0% chance, you need dice to start at 1 for that to work
Problem solved.
(I am joking!)
(Does someone sell "decade" dice, which faces say: 10, 20, 300, ..., 90 and 100?)
Absolutely, but i couldn't fit all of that into the subject line ;) and he's best known for the d100. Many of us remember the articles and ads from the 1980s describing the effort he put into that particular die.
I didn't see a picture of Zocchi's d100, Wikipedia has one
The idea was that your starting circumstances would be modified by the d100 zocchihedron roll.
One time, my buddy rolled a 2; our DM grimaced. "Well, you aren't starting off dead... but you might wish you were".
His starting conditions?
Naked. In total darkness. Sealed in a coffin. But at least he wasn't alone: he had a rat nibbling on his toes!
It's a nice novelty but it's not terribly practical. Despite having a d100, 2d10s are invariably more comfortable to use and easier to read. My d100 was purchased back in 1998-ish for its novelty and nostalgia value, not its functional value.
I bought a Zocchihedron cos we were playing a game that used percentages (Icar RPG) but rolling it was hilariously haphazard as it was essentially a ball! Loved it tho. I later received the game science dice set as a gift, which I still have. Sadly little time to play these days.
And I happen to own at least one of each of those specialist dice. And many more still. I think I have a die with faces for most even numbers from 2 to 100 and also some of the odd ones too.
OK now you all know I'm a nerd.
One bit I love from the early history of Gamescience is he didn't have the capital to make a full D&D set off the bat, so he'd get one dice mold made, release that one, then take the profits to make the next mold. Forget which was first but I think the d4 was early.
Somebody had to invent that too, right?
