Pet Balls is a game project designed with the primary purpose of testing and evaluating the performance of the Cocos Creator engine, specifically version 2.3.3. The game is characterized by its focus on simple physics-based mechanics, leveraging the Box2D physics engine, which has been adapted and customized for seamless integration with the Cocos Creator environment.This game offers a diverse experience with a total of 15 levels, distributed across 5 types of mini-games and 3 levels of difficulty. In other words, three increasing levels of complexity are presented for each of the 5 'pets' that players can control.The 'pets' are round-shaped animated creatures that interact with their environment through collisions. These 5 types of 'pets' include the bird, the fish, the octopus, the monkey, and the frog, each with unique mechanics that challenge players to complete levels creatively and strategically.