Big Winner, The Gomorrah

 is a free quest in Fallout: New Vegas.

Quick walkthrough
Take the Gomorrah for all you can without being banned. Play Blackjack, the Slots or Roulette table and wait for the floor manager to come when your Luck stays.

That moment comes when the player has won 9000 chips. The Omertas become a little agitated and ask the player to leave.