So, this was written last year. (16 June 2010) as a follow-up to “My favorite die”. Seems I never got around to publishing it...
I have some six-sided dice marked zero to five.
I believe I got these out of the bin of dice at Kaleidoscope Toys.
The only game I know of that uses such dice is a “WWII space combat” game called Hard Vacuum. (Which I haven’t played.)
They create some nice ranges. Two yields 0–10. Three, 0–15. Four, 0–20. (Keeping in mind, of course, that summing multiple dice doesn’t give linear results.) Use one which a d10 (or d20+) to emulate a d60.
Dice with a zero are also nice for open-ended rolls, as it means you don’t have numbers that can’t be rolled.
And, if you don’t have any 0–5 dice, just roll a normal d6 and read 6 as zero.