Hunter's Moon: A Sovereign Syndicate Adventure is a Victorian steampunk fantasy roguelike set before the events of Sovereign Syndicate. A mysterious plague has corrupted the natural wildlife, and agents investigate the Hunter's Moon in search of its cause and a cure. The adventure unfolds across four chapters, with new locations, enemies, bosses, and encounters along the way.
Players choose among four classes, including a brute, a soldier, and an alchemist, then shape an agent’s deck around their preferred approach. Each agent has distinctive cards, with hundreds of possible variations to craft and upgrades that strengthen them. Combat is turn-based: players hack, slash, and shoot while learning enemy traits and tactics. Enchanted tarot cards add another way to modify a run by combining effects.
Missions end in success or retreat, but either outcome brings resources such as money, cards, items, relics, and salvaged materials to improve agents, the airship, and future attempts.