So what about these secret doors?

[Nemesis-489]

The one before Snowdin I never figured out, then there's Papryus's house with his shed and Sans' glowy room.

I bought Bratty/Catty's mystery key but I have no clue at all where it goes.

[Jungus]

the door before snowdin can only be opened by no getting hit once during the special thanks, the special key goes to a house in waterfall, to get into sans' room try experienting with his dialogue when he's judging you. the shed is for when you lose to papyrus

[sorathecrow]

Spoilers, sort of!

The one before Snowdin you need to finish the game and get the true end credits, avoiding all of the special thanks.

I have no idea about the shed.

Sans' room, I hear, you can obtain the key to by reloading sans judgement scene multiple times.

The mystery key that you buy goes to the pink house next to Bl-I mean, Napstablook's house.

[Nemesis-489]

thanks guys, the house contents were neat. but the stupidly long names keep screwing me over.. :c

[PayTheReaper]

Originally posted by sorathecrow:

Spoilers, sort of!


I have no idea about the shed.

With shed you have to lose to Papyrus, you will wake up inside.

[Azar]

* how do you reload your game
* quitting the game, resetting...?

[Albel11]

The shed besides Papyrus and Sans house you need to... get beaten up by Papyrus =P No joke lol

[CyperAleksi]

In a nutshell:

Door before Snowdin- As sorathecrow said: "The one before Snowdin you need to finish the game and get the true end credits, avoiding all of the special thanks."

Shed - lose to Papyrus (multiple times for dialogue)

San's room - save just before "being judged", talk to him and load, talk to him and load, do that a few times without saving, just load it back up.

San's(?) secret room - Take the key inside his room, then go behind the house, behind mailboxes.

Mystery Key - House next to Napstablook's house.

"Bench room" - the floating flowers can be arranged to take you right from the room with a bell in waterfall area. You will find a room with a bench and echo flower. On a bench is an item.

There are a few more like with the piano, but going to mention those for now. Hopefully helped.

[Tarious]

Once you get san's key there's also a hidden lab behind their house.