URSWASA: Unnamed Roleplaying System With A Stupid Acronym

From the introduction:

URSWASA, which is short for Unnamed Roleplaying System With A Stupid Acronym, is a generic role-playing system intended for more advanced gamers. I am assuming a certain amount of self-selection involved in you hunting down and finding this site, which means I'm going to skip over the "what is a role-playing game" rigamarole usually involved in the beginning of most role-playing game manuals. Instead, this first page is a collection of design notes, explaining the basic principles behind URSWASA. If you want to skip past all of that stuff, I suggest moving onto the Core URSWASA rules.