Pizza Stacking is an awesome, addictive stacking game. Easy to play and fun for all ages, try this Free game and see how you can stack up. How to Play. Tap the screen stack a pizza block. Stack as many pizzas as possible to build a skyscraper. Remember, the taller the tower, the higher your score isBuild up your favorite pizza into endless cool shaped skyscrapers whilst trying to build the tallest stack. Like us on Facebook: https://www.facebook.com/GreenTeaGames/.