This is an alternative to Nightless in that it makes sure players with good reads don't get nightkilled at the start of the game.
Depending on the numbers, different win conditions can be used:
The Mafia win if half of the living players are goons. A townie making a vengekill is not considered dead. The Town wins if all goons are dead.
Or:
The Town wins if all goons are dead, even if no one is alive at the end of the game. The Mafia win if all townies are dead and at least one goon survives.
The Town wins if all goons are dead, even if no one is alive at the end of the game. The Mafia win if all townies are dead and at least one goon survives.