Board Thread:General Discussion/@comment-5023546-20130910031001/@comment-11687-20131108132124

Thorgar959 wrote: The d20 system is not just a more direct system, long and short term regarding campaign length, but also easy to pick-up, and use etc.

It's also the most widely-played table-top RPG system, though certainly things might be different in a given locality. People tend (in my experience) to want to stick to systems they already know, since otherwise it can mean either having to buy new books or borrow someone else's, as well as the time required to learn and grow comfortable with a new set of rules.

Thorgar959 wrote: The Percentile or Centenial systems, however, give you an indication as how much you succeed or fail a test by. It basically has the critical hit system built in.

For what it's worth, you can judge a d20 roll against a DC (target number) as an indication regarding the degree of success or failure by how far above or below the DC the roll is...it just won't have any mechanical impact on the results.

Also, I noted this on my blog here, but there's no reason not to mention it here too; I made d20 stats for Pyrrha over on personal blog which I think represent her pretty well.