Originally published at: Film of a 120-sided die bouncing through a forest | Boing Boing

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I bought one of the first 100-sided die to be released, way back in the late 80’s… maybe? Early 90’s? Whatever. Yeah, they roll forever. And ever. I returned to 2d10 for my 100% rolls, it worked fine. Not sure how you’d model 120 with a couple of die, though. Maybe 1d6 to determine the 20th pool it’s in, and 1d20 for the value of that pool (ie, 2 on the d6 is 21-40, and 17 on the d20 would be 37… seems messy though).

Anyone know why they’d need a d120? Is there a game system that has a value of 1-120? Or just for giggles?

d120… otherwise known as a “ball”

Suds? I fear someone upstream has an overflowing septic tank.

Dude, I had decades like that…

One of the gaming magazines I read (possibly different worlds, possibly white dwarf), printed the results of someone throwing a d100 5500 times. It wasn’t an even distribution.

What would you do with a d120 anyway? It’s hard enough finding a use for a D30.

Looks like it was “White Dwarf”

Probably a matter of construction rather than use, but 120 can be subdivided really well so you can throw away all the other dice

120 can be divided evenly by 2,3,4,5,6,8,10,12,15, and 20 so it could be your go-to die (as long as you roll inside the box to make it stop)

Do you need a reason?

The fairest dice are those used by casinos. But razor cut D6s with flat painted pips lack a certain appeal.

Last i read/heard there is no exact method for placing N points on a sphere such that they are equidistant to one another, (special cases such as numbers associated Platonic solids notwithstanding). This from a *prolonged* discussion from a math prof i had lunch with who was also an avid golfer and worried (perhaps overly intensely) about the placement of the dimples on the golf-ball. Or said another way, (in annoying falsetto perhaps), a number which is multiple of the number of vertices on a Platonic solid will be more easily placed symmetrically: 120 being 6 times a dodecahedron vertex set.

Why not D12 and D10?

“May your die chip and shatter!”

– ancient Freman gaming curse.

There’s a problem I assign pretty much every time I teach probability that involves a die with a prime number p of faces (where p can be an arbitrary prime). Occasionally I get pushback from students challenging the premise of the problem.

Because they can - 120 is the largest possible fair die.

I got a glow in the dark D13, which is cool, but also a pair of hexadecimal dice which I use to roll random RGB colours of the day. Now those are useful.

Well… because that’s too easy? Complicate the things! (good call, you’re right)

So “for the giggles” is the correct answer. Good to know.