A guy I game with has the red and black ones. I can kind of read them if I get close. But just looking over, even when sitting next to him, they're almost impossible to read. I don't think he's cheating at all, but man they're hard to read
There's no official regulation on dice size, but check with your dm before you get anything too big or small to use at the table.
There's no official regulation on dice size, but check with your dm before you get anything too big or small to use at the table.
I have played with people using marbled dice with difficult to read numbers that infuriate me... almost to the point where I wish I could buy them a set of flat, ivory colored dice with black numbers and force them to use it.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.