With collaborative projects, BundleRabbit will split the royalties between you and your authors.
Add your "world" projects to a BundleRabbit series for all books in the series to be combined at one place.
By combining Collaborative Projects with BundleRabbit Series you end up with a shared world.
You decide the royalty split. You provide your own contract. You add the projects to your world. It's your property.
Through BundleRabbit, you can publish to Kobo, Amazon, Barnes & Noble, and/or Apple Books. And ... paperbacks.
Each book in your world appears on your world's sales page with links to Kobo, Amazon, Barnes & Noble, and Apple Books.