AlrikFassbauer >
Yes, the use of the 20 sided dice it is older than the year 2000, but then your favorite word..."Patent"...comes into play.
It is on "D20-System" where the patent is.
But D20 is simply a short for (Die 20 or 20 sided dice) system.
Here's the scoop on D&D:
D&D Founded upon the "Chainmail system"
Oh, by the way, I like the DSA rules. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
Tsel <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />