Battle Between the Worlds is a set of rules for running one-shot Dungeon Planet adventures. You get new characters with truncated, personalized rules and a bunch of adventure situations to choose from. The GM still has to know how to run Dungeon World, but you can play using only this document.
The character sheets include illustrations by George Metzger, Juan Ochoa, Mike Jackson, and Nate Marcel.
Because I wrote these quick start rules primarily for the upcoming Space Wurm vs. Moonicorn (still not done!), I am releasing it as Pay What You Want.
The print version is available from Lulu.