Semi Frequent Undertale Factsさんのイラストまとめ

* In DELTARUNE, when you encounter Susie for the first time in the Dark World, depending on what you do when she follows you, she will make a remark and then go by herself.

* If the the northernmost part of Snowdin, you can randomly get a phone call of someone calling for G if your "fun" value falls between 2 and 39, the funny thing is this wasn't translated for the Japanese version of the game.

Submitted by: @MFusion245

* While knowing about the Sun, Papyrus has actually never seen the Sun or any image of it.

* In DELTARUNE, when Susie asks you if you accept her deal, the game is programmed to highlight the "Let's Not" option for 1 frame, looking at the code this seems to be intentional, this is consistent for every version of the game.

Submitted by: @limitsontoday

* The sign in the Piano Room in Waterfall stays that "only the first 8 are fine" but you only need to play 7 notes.

Submitted by: @itstdpmusic

* If you enter the Dark World in less than 8 minutes after booting up the game, a shiny object will appear above you. This object will be the Wrist Protector, an item that helps you skip text holding C. This might be referencing Toby's wrist problems and it's useful for speedruns

* The first time you save in DELTARUNE you actually overwrite Kris's Save File. Next time you try to do this you will find that the file now is EMPTY.

* Inside Asriel's drawer in DELTARUNE you can find something different depending on the save file you're playing on.

* Muffet is a bought in character created by Michelle Czajkowski that became part of the main story as a mini boss. Here you can see the concept art sent to Toby. Michelle even made a tweet about it!

Michelle's account: https://t.co/lkfxhxqhGH
Source: https://t.co/oMF3kbsDA8