Pet Simulator 99 is a popular Roblox experience developed by BIG Games Pets, released on December 1, 2023. It is the fourth major installment in the Pet Simulator series and quickly became one of the most visited games on the Roblox platform, accumulating over 2 billion visits.\n\nPlayers collect, hatch, and upgrade hundreds of unique pets by breaking objects and collecting coins across a wide variety of themed worlds. Pets vary in rarity from common to mythical and secret tiers, with higher-rarity pets providing greater power multipliers for farming in-game currency.\n\nThe game features a deep progression system with ranked worlds, enchants, boosts, and limited-time events that keep the meta constantly evolving. Trading rare pets between players is a central part of the community experience, driving significant demand for high-value pets and in-game currency on secondary marketplaces.