Home > Roblox Guides > Pet Simulator 99 Castle Guide

Pet Simulator 99 Castle Guide

Published Date :

Pet Simulator 99 is loaded with hidden locations, mysterious achievements, an unresponsive vendor, and occasionally gift boxes. One such location or to be precise the locked door is standing tall in the third area. This massive castle with a huge lock is not something you can unlock so early in the game. As obvious as it might be, to enter through this door you have to use a specific kind of key.

Once unlocked you will get access to plenty of new features, including the much-needed Trading Plaza of the PS99. So, without any further ado, let us get rid of that padlock.

How to Open Castle Door in Pet Simulator 99

To open the castle door, you have to use the Castle Key. Getting the key is not very difficult, as you can obtain it within an hour of playing when all methods are utilized, including Pet Eggs, Golden Pets, Potions, and Enchants.

How to Get Castle Key in PS99

Open Castle Door in Pet Simulator 99
Screenshot by Gamer Tweak

Castle Key will become part of your inventory when you perform the Rebirth 1. For this rebirth, you must go near the huge golden statue of Area 25 (Tiki) and use the Rebirth option that pops up upon your arrival. This will reset everything you earned by now and lock all the previously unlocked areas but will not affect your inventory, including pets and items. Additionally, apart from the Castle Key, you will get Teleport, permanent 75% stronger pets, and a gift box.

To put it in the steps, here’s what you need to do to get the key and unlock the Castle in Pet Simulator 99:

  1. Collect 750K Gold Coins and unlock Zone 25 with it.
  2. Approach the Golden Statue, then use the Rebirth! button.
  3. Break the breakables and unlock Area 3.
  4. Go near the Castle lock and press E.
  5. Hit Yes to use the Castle Key and permanently unlock the door.

All Benefits of the Castle

All Benefits of the Castle in PS99
Screenshot by Gamer Tweak

Inside the Castle, you will find four mechanisms:

That’s all on how to get Castle Key and unlock Castle in Pet Simulator 99. If this was interesting to you, make sure to check out PS99 guides, right here at the Gamer Tweak.

  • UMA DASH Codes (November 2026)

    UMA DASH Codes (November 2026)

    Published Date :

    The best part of UMA DASH is holding onto your ultimate until the last few seconds and flying past everyone right at the finish line. You can test out different perks to make your runner faster, and having extra Gold and spins makes trying new stuff way easier. I put all the working UMA DASH… Read More

  • Undertale Fight Codes (November 2026)

    Undertale Fight Codes (November 2026)

    Published Date :

    Are you looking to get more Gold and Lucky Rolls in Undertale Fight? The latest Undertale Fight codes can give you both, with some offering up to 35 Lucky Rolls and 20K Gold multiplied by your current multiplier. Make sure to redeem them before they expire. Last checked for new codes on: November 13, 2026… Read More

  • Arasaka Academy Codes (November 2026)

    Arasaka Academy Codes (November 2026)

    Published Date :

    This Cyberpunk 2077 inspired game actually feels like jumping straight into Night City. You pull jobs straight from your in-game phone, earn some cash, and start swapping out weak gear for rare Cyberware upgrades as you climb the ranks. Rerolls are huge when you want to switch up your build or fix bad starter traits,… Read More

  • A Bizarre Run Codes (November 2026)

    A Bizarre Run Codes (November 2026)

    Published Date :

    Trying to pull a good Stand from an Arrow in A Bizarre Run is pure luck, and nobody wants to get stuck with a bad kit when the starting gun goes off. You need a steady stash of Rokas to clear out bad rolls until you find a power that actually wins fights. Below are… Read More