The Mystery Key is an item sold by Bratty and Catty. Bratty and Catty describe it as "????? Probably to someone's house LOL." It unlocks the house adjacent to Napstablook's home.

2015年9月15日 · So towards the end of the game there is a shop that sells a "Mystery Key" for 600g. I figured that the obvious door that it opens would be the Toriel door in Snowdin and …

In this video i will show you what to do with the Mystery Key we bought from Catty and Bratty..

The house next to Napstablook's house, which is unlocked using the Mystery Key. This key can be bought from Bratty and Catty for 600G. Inside is an entirely pink interior, with pink and star …

2024年9月17日 · The mystery key is a secret item that can be found in the game, and it’s only accessible under specific conditions. It’s hidden in a location that requires players to use a …

2022年3月31日 · Interact with San's drawer to obtain a mystery key. Go back behind the house & interact with it. With the mystery key, you can unlock the back of Sans & Papyrus's house to …

2015年9月16日 · Save before talking to Sans at the end, then reload. Repeat a few times to get a key to his room. Then snoop around there to find an another key that unlocks a hidden door …