In this 80-page supplement for Two Summers, you'll find:

Options to create adventures as a group and/or play without a GM
A darker version to the base game and a one-shot adventure to go with it
Variants to introduce supernatural elements to the base game: magic, parallel universes and time travel options, with a one-shot adventure to go with the latter
Variants to play a short campaign of Two Summers based in the city instead of the country and/or in the winter instead of the summer
Variants to play in other eras, play children and/or old people, or play people from the same family, with a one-shot adventure to go with the latter
A SRD (System Reference Document) of the game to encourage other hacks, variants and options!