Dungeon Crawl Classics Quick Start Rules & Intro Adventure (Free RPG Day 2019)

Publisher's blurb:

These starter rules were written specifically to introduce judges and players to the DCC RPG system. In some areas, rules have been condensed and simplified. These rules will serve primarily to get characters through their first level 0 adventure and their first level 1 adventure. Although the rules go up to level 2, for the full DCC experience and play at levels up to 10th, please refer to the Dungeon Crawl Classics RPG rulebook!

You get the enduring classic Portal Under the Stars 0-level adventure for new players, plus Geas of the Star-Chons.