Meatballs is a standard topping available in Papa's Pizzeria Deluxe. The topping is unlocked at Rank 26 with Christine.
Meatballs are a meat in Papa's Stirfryeria exclusive to Portallini Feast. They are unlocked on Rank 51, with Olga.
Meatballs are a standard topping in Papa's Pizzeria GOLD. They are unlocked after serving 30 orders with Red Peppers.
Meatballs are a holiday-exclusive meat available during Portallini Feast in Papa's Wingeria ReSeasoned. The meat is unlocked at Rank 72, with Carlo Romano.