In Deltarune Chapter 3, players will carry on their journey alongside Susie and Ralsei, exploring an alternate tale reminiscent of Undertale. Having completed the initial stage of Tenna’s game show, they find themselves unable to progress until they uncover the secret Tenna has been concealing. After discussing matters with her, players are tasked with pushing the buttons of a guard standing before a door, leading them down a corridor ending at a door protected by a parental lock code.
In this walkthrough, I’ll share with you the steps on how to crack the two parental lock codes in Deltarune Chapter 3, as well as offer the solutions if you’d rather jump straight into the following stages of your journey.
What Are the Parental Lock Codes in Deltarune Chapter 3
Forget the Puzzles
If you don’t mind figuring out the solutions for the puzzles, here are the two parental lock codes. You can find them below:
[Puzzle solution 1]
[Puzzle solution 2]
- First Parental Lock Code: 213
- Second Parental Lock Code: 1225
For those wanting to learn how to actually get the solution and solve the puzzles, keep on reading.
How to Solve First Parental Lock Code Puzzle in Deltarune Chapter 3
Not As it First Seems
The initial parental control puzzle is quite straightforward, but it’s unlikely that your first guess will solve it (unless you’ve already found the solution provided earlier). After making a guess, if you’re incorrect, the TVs in the room will activate. Upon interacting with the console, you’ll discover three distinct areas. The area on the left features three blue blocks and four brown spots, while the middle is covered in grass, and the right one has an orange switch located at its bottom corner.
Initially, engage with the grass located in the center area. Doing so will uncover a design consisting of brown spots. Subsequently, proceed towards your right side, and you’ll find yourself on the left side of the television screen. Grab one of the blocks colored blue, then move it onto the orange button or switch situated in the adjacent room. This action will trigger orange marks to show up on the walls of that room, forming a pattern that spells out the number ‘3’.
If you shift the blue blocks in the room on your left, you’ll uncover a ‘1’ and it’s evident that there’s a ‘2’ in the middle (or what appears to be the middle) room. However, here’s an interesting twist: The order of the rooms is reversed from left to right. In this setup, the middle room is actually the first room, followed by the one on your left, and finally the one on your right. So, the combination for the parental lock code is 213.
Earning an S rank in Tenna’s game show could simplify the solutions for the parental lock codes. This achievement grants access to a room filled with mini-games, each offering unique rewards. Continually achieving S ranks will unveil additional secret mini-games within this room. One of these hidden games awards a sword that significantly eases the difficulty of both puzzles. In the first puzzle, you can now swiftly cut through the grass with a single swipe instead of laboriously pulling it out piece by piece.
How to Solve the Second Parental Lock Code Puzzle in Deltarune Chapter 3
So Many Screens
In this level, you must strategically position two blue blocks on the lower left television screen to obstruct the key’s path on the bottom right TV. Since the key is moving around, you need to trap it by blocking its escape route. Once trapped, simply run into the key to capture it. It may require some experimentation, but with the correct block placement, the key will eventually be caught.
It’s not necessary to position the blue blocks in a specific location. If you manage to fully obstruct the path, the key will remain trapped and you’ll be able to solve the puzzle successfully.
Once you open the door using the key, the TVs will display a scrambled code as before. Your task is to figure out the correct sequence of the screens to decipher the code.

Here’s an easier and more conversational way to phrase that sentence: “To find the second parental lock code, simply locate the corner bricks displayed on the screens. You’ll discover the code is 2115.
With the code punched into the door, you may proceed to the following room, noticeably chilly and adorned with a surprise near a festive tree. Don’t forget that you can maximize your Deltarune screen if the minimized window on PC is detracting from your gaming experience.
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2025-06-05 12:05