#numerals

It baffles me.

Allowing for some inaccuracies in your transcriptions of the faces, that's a standard d20 marked with Eastern Arabic numerals, rather than the more familiar Western Arabic numerals.

I am well! The doctor guy I gave your blood turned out to be kinda evil, though...I guess unethical doctors are normal for Hell.

The most common numeral systems used to write Octal and Seximal on Gymnome are derived from a binary-octal numeral system introduced sometime in the early 1700s AD (600 or so years in the past), itself a reform of a non-positional numeral system that has much earlier and more obscure origin.

The proto-octal system assigned numerals to 0, 1, 2, and 4, and built digits up to seven using ligatures of those glyphs. From then on it was a pretty much normal (by our standards) positional octal numeral system.

Of course, many of these characters were somewhat tedious to draw, so inevitably the characters evolved more efficient shapes over time.

The proto-octal numeral system evolved into modern octal, but its numerals were also taken up by seximal users, who evolved their way of writing the numerals in a different direction.

The modern Octal and Seximal numeral systems began to emerge around the 1990s AD.