Manhattan Pizza, at its three Las Vegas locations, serves gigantic, delicious, personalized pizzas in addition to other great menu items like Baklava and Tiramisu. It's a hidden treasure in nondescript strip malls, a hole-in-the-wall like so many other superb Las Vegas restaurants. The giant pizzas are well-made and cheap, and the staff will accommodate most of your requests with good cheer.
A delicious hole in the wall:
Please stop telling us how great authentic, true, honest New York Pizza is, and all the ways in which the pizza slice you're eating right now is inferior. We don't care at all. We know Las Vegas is full of great restaurants. The best course of action for you to take is to move back to NY, and eat your delicious pizza sitting cross-legged on the dusty floor of your unfurnished studio apartment.