Princess Castle · Floor 1

Tricky Castle Level 21

Flip the arrow before entering the upside-down room

Tricky Castle Level 21 gameplay showing flip the arrow before entering the upside-down room
English Level 21 gameplay screenshot from the community level record · Numbering may differ by app version.
Important notice regarding level numbering

Tricky Castle room numbers can change between Android and iOS releases. Before following this Tricky Castle Level 21 guide, match the gameplay screenshot, room layout and puzzle clue to your version.

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Tricky Castle Level 21 walkthroughs & guide

Below is a comprehensive walkthrough for Tricky Castle Level 21, covering the complete route from the opening position to the exit. The main challenge in Tricky Castle Level 21 is learning how to flip the arrow before entering the upside-down room while avoiding the trick built into the room. Follow the steps in order, check the visible response after each action and use the screenshot above to confirm that you are on the same version of the level.

Tricky Castle Level 21 quick answer: Walk into the wall to reach the arrow control, reverse the top indicator, then enter the door and collect the key in the upside-down second room.

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Step 1. Walk past the obvious door into the wall

In Tricky Castle Level 21, move forward toward the solid-looking wall instead of entering the nearby doorway immediately. The wall conceals access to the arrow control shown above the room. Keep walking into the surface until the hidden route responds, because using the door before changing the indicator leaves the key inaccessible in the next area.

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Step 2. Reverse the top arrow indicator

In Tricky Castle Level 21, interact with the arrow so its direction flips. This control determines the orientation of the room reached through the door. Confirm that the arrow now points the opposite way before returning; the sign is your only visible proof that the second room will load in the state needed to reach the key.

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Step 3. Enter the upside-down room and take the key

In Tricky Castle Level 21, go through the door after the arrow has been changed. The next room appears upside down, moving the key into a reachable position. Collect it, follow the inverted platforms carefully and use the key on the exit. If the key remains out of reach, return and verify the arrow was fully reversed.

Notes and Precautions

  1. 1. The first doorway is a trap if the arrow has not been flipped.
  2. 2. The wall route is passable even though it appears solid.
  3. 3. The arrow controls the orientation of the second room.
  4. 4. All bats are located after the room turns upside down.

Tips and Tricks

  1. 1. Test the wall beside the arrow before committing to the door.
  2. 2. Watch the arrowhead change direction as confirmation.
  3. 3. Move slowly in the inverted room until the new platform positions are clear.
  4. 4. Collect second-screen bats before spending the key at the exit.

Tricky Castle Level 21 collectibles and secrets

For Tricky Castle Level 21, all bats are on the second screen. Search the upside-down room after collecting the key and before entering the final gate, using the changed orientation to reach each bat safely. The inverted layout is the intended collectible route, so do not try to gather them before changing the arrow first.

By following these steps in sequence, you can finish Tricky Castle Level 21 without relying on random movement or unnecessary interactions. Remember that the defining puzzle in Tricky Castle Level 21 is to flip the arrow before entering the upside-down room. If your room looks different, compare the screenshot and video before retrying because your game version may use another level number.

Guide checked against the community level record for Princess Castle Level 21 and the dedicated gameplay video.