How to Get the Secret Key in Pet Simulator 99
You can find the secret key in the Hidden Cave behind the waterfall in the Mystic Valley area. Happy hunting!
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Forget the key. Focus on leveling up your pets first. #HotTake
To get the secret key in Pet Simulator 99, you need to complete the Hidden Questline which starts with talking to the mysterious NPC near the Forest Shrine.
I got the secret key after defeating the Mystic Guardian boss in the Enchanted Forest. It's tough but worth it!
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