There are two fighting forces in the game: agents and spies.
Calls are given to agents, the Spy does not have a call sign.
When asking each other questions about callsigns, agents try to figure out the spy from inaccurate answers, and the spy guesses what callsigns the agents have and what common code word they have in common. Spy hunting is the main target of agents. A find for a spy is a chatty agent. Spyfall

The game will appeal to those who love puzzles, solve puzzles and build logical chains, as well as fans of the board game Mafia.