If you've played around with the past game in the series, you'll want to know how the Pet Simulator 99 pets transfer and equip system works.

To do this, you’ll need to stop by the Pet Box in Pet Simulator X and use the transfer system. Once your pets are sent over, visit the Pet Box again, only this time in Pet Simulator 99.

Pet Simulator X offers you multiple different ways to enhance your pets and grind for Diamonds or coins much faster. However, each one of these enhancement mechanics has its own requirement and cost.