Mafia picks a person to start with the gun. The person with the gun is the person who decides the vote. If Mafia is chosen, the Mafia dies and the person keeps the gun. If Town is chosen, then the person with the gun dies, and the Town gets the gun instead.
If Gunned person shoots scum they live
If Gunned person shoots town they die and the user shot gains gun
In Mega-Popcorn, if Gunned shoots Vengeful they die as well and mafia picks new person to gun. Also, in Mega-Popcorn any number where scum=town is not endgame unless all vengeful are dead.
6: 2x Mafia Goon, 4x Vanilla Townie
11: 4x Mafia Goon, 7x Vanilla Townie
18: 3x Vengeful Mafia, 4x Mafia Goon, 11x Vanilla Townie