Make your own pizza seems to be the new craze sweeping the food world. This place is a good but not great edition.
First off the staff is a little off, they all appear to be young, teens or early 20's and kind of going through the motions. They appeared to be having more fun gossiping and goofing off than helping customers.
They do have a variety of toppings and you can pretty much add whatever you want if you pick the create your own pie option. For the price I would advise the create your own and not any of their specialty pies.
Place is a little tricky to find as it is in the underground beneath the MGM. Decent option if you want a quick bite for in Vegas is a sort of reasonable price.