From the Game's Introduction:
Needed Equipment
Playing cards, with Jokers. 1 deck for up to GM+3 players; and additional deck for each addition 3 players.
Writing implements and surfaces.
These rules.
Setting
You are a group of stone age people. You each have one character, living in the temperate plains. Survive and thrive if you can... You might not even be people, since this isn't Earth... but Tellus, where magic exists.