DENVER--(BUSINESS WIRE)--Smashburger, the national better burger restaurant known for its fresh, smashed to order burgers, today announced it is kicking off the debut of its newest limited time offer burger with a social media campaign #SinCitySurvivalTips. The promotion comes in celebration of the brand’s newest addition to the burger family, the Sin City Burger, an eclectic combination of American cheese, Smash Sauce, haystack onions, Applewood smoked bacon and fried egg served on an egg bun.