Welcome to Mafia Den: The largest, most open-ended Mafia MMORPG out there. Explore 8 different cities, engage in gang wars, and run a business. Do you have what it takes to make it to the top? Mafia Den is a living, breathing, constantly changing Mafia world. Start as a nobody and rise to the top. Commit crimes, work out at the gym, make bank, buy weapons, real estate and more!