Pet Simulator X is a Roblox game released in early 2021. Your goal is to earn enough coins to open eggs in the many worlds in the game. From the eggs, you open there will be a chance of pets with different strengths and rarity. You can enchant and upgrade your pets to become better. Trading is an option for those that find it hard to grind the pets themselves.
This is a pay-to-win game, and you would end up spending lots of hard-earned cash if you want the best and rarest pets in the game. The game is available for free on Roblox.