New Mafia is a mobile app designed for playing Mafia (or Werewolf) with friends. This app replaces the traditional set of cards and works as a notepad for game events, a counter for voting, and has an advanced timer for discussions. It can also replace the game moderator. The game rules are based on the principles of simplicity, importance and interest of each role, role system, many different possible scenarios, bluff and pretending, and reasonable and fair voting. This app can be used to play the game anytime without the need for game cards, to be the game moderator without writing or memorizing anything, and to play without the moderator when there are not enough players. Mafia is a great reason to meet friends, new people, and communicate with interesting people in a relaxed atmosphere.