From the publisher's blurb:
The simplicity of Heads or Tales allows your group to tell stories of any kind, with your imagination being the only limit. Sometimes though, we need a little creative inspiration. That’s what the Heads or Tales Supplement Bundle 1 is for! In it, you will find guides for running sessions in fantasy, science fiction, and wild west settings. These guides provide scenario generators for the GM in order to quickly get the opening threads of the story put together, so your group can get into the action even faster. On top of that, they provide helpful world-building questions for the group to discuss to really get a feel for the themes of your story. This is the first of our supplement bundles, so keep an eye out for future supplements with even more genres!