Recruit members of your criminal mob, then pull off jobs in the city for cash. Some crimes attract more attention from the police than others, and bringing down the Heat is bad for everybody.
Heat is a micro-ish card game that plays out over three rounds. Every round, there's a drafting phase where your hand evolves by passing cards to your neighbor and drawing new cards. Then you select which cards from the hand you draft to play, attempting to out-guess the other players while scoring the highest yourself and carefully managing the amount of Heat you have, lest the police come down on you at the end.