how to open the door in deltarune chapter 4
To open the door in Deltarune Chapter 4 , the most likely solution is the Mike door password: 6453. That code was reported in multiple walkthrough-style sources as the key for the first locked Mike door in Castle Town.
What to do
- Go to the TV building in Castle Town.
- Interact with the Mike door.
- Enter 6453.
Second door
There’s also a second Mike-related door later on. One guide says you need to pat the cat statues , save the Mause to get the required hand ability, and then use the microphone mechanic to make enough sound for the door to open.
Extra note
A separate walkthrough mentions a different secret-door sequence in Chapter 4 involving notes and a piano , which opens a passage in the old man’s study, so “the door” may refer to a different puzzle depending on where you are.
If you mean a specific door location, I can narrow it down to that exact room.