This is an attempt at an illustrated guide to the rules of Ultimate.
The current version illustrates the WFDF Rules of Ultimate 2013.
This rule book is a derivative of the WFDF rule book and is licensed under CC BY-SA 4.0 International License.
The tasks for this project are currently managed on this trello board: https://trello.com/b/OWnNA1h1/ultimate-rule-book (may soon be shifted to GitHub)