Simplicity Core Rulebook

From the introduction: By design, the Simplicity system is easy to learn, easy to use, and easy to master. Everything you need to know about your character exists on one simple sheet. Simplicity uses a design and evolution system that allows you to develop your character as you see fit. By default, no races or classes exist in Simplicity. This is intentional. How you roleplay your character defines who they are more than the numbers on your character sheet.