In Firefly Adventures, a cooperative game of thrillin' heroics and shameless misbehaving, players take on the roles of the crew of the Serenity, attempting to complete jobs in the Eavesdown Docks of Persephone to earn the Credits they need to keep flying. Firefly Adventures is scenario-based, with each job having its own challenges, opponents, and victory conditions that the players must complete in order to succeed. Firefly Adventures: Brigands and Browncoats includes "casual" and "heroic" miniatures for five crew members, as well as 10 different miniatures representing cowboys and thugs to fight against, double-sided board tiles, 3D building terrain, cards, and dice.