Undertale Locked Door

First you have to get the key to sans room.

Undertale locked door.

In the nintendo switch version examining the door leading to mad mew mew in the dog shrine before it is unlocked yields a message saying that the door is locked by a mysterious seal as an ominous piano jingle is heard. However unlike the snowed inn the money is not returned to them. There is a dog behind this door. Glyde can be encountered in this room before fighting papyrus.

Anyone that s started up undertale for the first time will encounter a mysterious locked door early in the game s snowdin area. To do that you have to save just before he judges you and then reload several times until he gives you the key. After that you go into sans room and will find another key on a box. That key will open the back door.

Handing over any of the listed items rewards a response and in most cases an item. Nothing will open it not even the expensive mystery key item. Cinnamon bun reward. Frisk do not let them in.

The door which bears the delta rune is surrounded by glowing mushrooms and floating particles. If the mystery key is used on the mysterious door it reads the following text. You used the mystery key. If used during the fight against mettaton ex the following text displays.

The mysterious door is an area found in snowdin forest south of the right side of the room with the icy x s and o s puzzle. You used the key the lock clicks. As the key failed to fit in the hole.