The Mike’s Room code in Deltarune has become one of the most discussed mysteries after Chapter 3’s completion. This secret room, hidden behind a locked door in Castle Town, can only be accessed with a specific code. While not part of the main story, Mike’s Room has captured the attention of completionists and lore hunters looking to uncover the game’s deeper secrets.
In this guide, we’ll explain how to find Mike’s Room, what code to use to unlock the door, and what we know so far about its purpose and connection to Chapter 4’s hidden content.
What is Mike’s Room in Deltarune?
Mike’s Room is a secret area introduced in Chapter 4, located inside a new TV building in Castle Town. The room becomes accessible after completing Chapter 3, and is not mentioned directly in the story. Instead, players find it by exploring Castle Town during the early moments of Chapter 4.
To access the room, you’ll need to find the TV building and input a numerical code at a locked door. This opens the path to Mike’s Room, which may contain hidden lore, bonus content, or clues about a potential secret boss in the future.
Where to Find Mike’s Room in Deltarune Chapter 4
After finishing Chapter 3, you’ll return to Castle Town at the beginning of Chapter 4. The TV building is a new structure that appears during this phase.
Steps to Locate the Room:
-
Start exploring Castle Town once Chapter 4 begins.
-
Look for a TV-shaped building that stands out from the other structures.
-
Enter the building and you’ll encounter a locked door with a number pad.
-
Interact with the door to attempt entering the access code.
This is the entry point to Mike’s Room.
Mike’s Room Code in Deltarune
To unlock the door, you must enter a specific four-digit code. As of now, two primary codes have been confirmed by players:
-
6453 – This is the main code that consistently works across most versions.
-
5962 – Some players have reported this alternate code working in their save files or regional builds.
These numbers are believed to be derived from phone numbers and visual clues scattered throughout Chapter 4, though the exact source remains vague.
Tip: If 6453 does not work in your game, try 5962 as a fallback.
What’s Inside Mike’s Room?
At the time of writing, the full contents of Mike’s Room remain partially hidden. Players who enter the room report that:
-
It does not trigger any cutscenes or immediate events.
-
The room may contain symbolic or environmental clues.
-
Some speculate it is tied to Mike, a mysterious figure hinted at in previous chapters.
Importantly, there’s no known boss fight or collectible inside—yet. However, the community suspects this room may serve as a setup for later chapters, possibly linked to a hidden route or extended lore.
Is Mike’s Room Required for the Main Story?
No. Unlocking and entering Mike’s Room is not mandatory for progressing through Deltarune Chapter 4. However:
-
It’s highly relevant for players who seek 100% exploration or lore completion.
-
Visiting the room may unlock subtle dialogue or content in future updates.
Even though the content is currently limited, keeping track of this room could be key for understanding the full scope of Deltarune’s secrets as more chapters are released.
Final Thoughts
Unlocking Mike’s Room in Deltarune Chapter 4 is a curious side quest for fans chasing every hidden detail. By entering the code 6453 (or trying 5962 as an alternative), players can gain access to a mysterious locked door in Castle Town. While its purpose is still unclear, Mike’s Room may hold more significance as Toby Fox releases future content.
If you’re aiming to uncover every mystery in the game, make sure to explore Castle Town thoroughly and take note of any odd interactions. You never know when a simple door might open a whole new thread in the story.