Papa's Burgeria at Cool Math Game. If a Pizzeria serves pizzas, then naturally a Burgeria would serve burgers. However, Papa's Burgeria will make any delicious hamburger or cheeseburger to order, and it just so happens his customer's are as picky as they come. In this frantic sequel to Papa's Pizzeria, you play as either Marty or Rita, cooking, building, and serving the craziest burgers in town. Work up the ranks and become a patty flipping master!