Cities without Number Free Edition - https://preview.drivethrurpg.com/en/product/449873/cities-without-number-free-version
Worlds without Numbers Free Edition - https://preview.drivethrurpg.com/en/product/348809/worlds-without-number-free-edition
Stars without Number Revised Free Edition - https://preview.drivethrurpg.com/en/product/230009/stars-without-number-revised-edition-free-version