The secret door in Pet Simulator X is a hidden passageway that leads to a secret room filled with valuable rewards. To unlock the secret door, you'll need to complete the following steps:

How to Unlock the Secret Door in Pet Simulator X

Collecting the Keys

1. Obtain the Red Key: The Red Key is located in the Volcano Island cave. To find the cave, look for a large volcano in the center of the island. Once you're inside the cave, follow the path until you reach a room with a chest. Open the chest to obtain the Red Key.

2. Acquire the Green Key: The Green Key is hidden in the Forest World. To find the Forest World, look for a portal in the Green Hills. Once you're in the Forest World, follow the path until you reach a clearing with a tree in the center. Dig under the tree to find the Green Key.

3. Get the Blue Key: The Blue Key is located in the Ocean World. To find the Ocean World, look for a portal in the Beach Area. Once you're in the Ocean World, follow the path until you reach a sunken ship. Dive down to the ship and enter the captain's cabin to find the Blue Key.

Unlocking the Secret Door

1. Locate the Secret Door: With all three keys in your possession, head to the Pet Shop. Once inside the Pet Shop, look for a wall with a hidden door. The door is located in the back of the shop, behind the counter.

2. Insert the Keys: Use the Red Key to open the red keyhole, the Green Key to open the green keyhole, and the Blue Key to open the blue keyhole. Once all three keys are inserted, the secret door will unlock.

3. Explore the Secret Room: Enter the secret room to find a variety of valuable rewards, including exclusive pets, diamonds, and coins. Collect these rewards and use them to enhance your gameplay experience in Pet Simulator X.