Up-n-Atom Burger is a fast-food restaurant featured in Grand Theft Auto V. Its taglines are "Once It Pings, Eat Like Kings" and "Food from when we were morally superior", and can be seen on the delivery trucks around Los Santos. It's a parody/spoof of In-N-Out Burger. It's main stock competitor is Burger Shot, while it's other competitors stand as Cluckin Bell, Pizza This and Taco Bomb.
Their menu includes:
- The Triple Burger.
- The 10-slices of Bacon-Triple Cheese Melt.
- Extra Creamy Jumbo Shake.
- Footlong Chili Dog.
- French Fries.
- Chicken Liver Surprise.
- Boulevard Del Perro, Del Perro Plaza, Del Perro, Los Santos
- Las Lagunas Boulevard and Vinewood Boulevard, Downtown Vinewood, Los Santos
- Great Ocean Highway, Procopio Truck Stop, Procopio Beach, Blaine County, San Andreas
- On various billboards.
- On the sides of some tractor trailers.
- On TV spots.
Visable in pictures and trailers.
- Up-n-Atom is based on the Western U.S. hamburger chain In-N-Out Burger, with the new name being a pun of the phrase "up and at 'em".
- The tagline refers to Burger King, which is already parodied as Burger Shot. The yellow curve up over the Up n Atom name is reminiscent of both the In-N-Out logo and McDonald's "golden arches."
- In the TV commercials, some scenes from L.A. Noire are used to show the 1950s segment.