I was thinking about it for a long time and it occurred to me that first I will start with the typical UNDERTALE and from there add things that will be in the fangame (this is just a MOD). I won't add everything I have in mind for the fangame, I'll just add some things.
8 Directions!!! (and pose T) 
Earthbound, be like:
(UNDERTALE YELLOW characters will only be mentioned or referenced 
...)
TR!Frisk - My frisk of the comic TWIN RUNES
DELTARUNE CHAPTERS 1-4 RELEASE DATE ANNOUNCEMNT
Let's get to the point - Spanish / Portuguese.
(English version in the comments)
Pluey 
This week's Fan Art Friday celebrates Undertale! Accept the quest in your quest log to get started.
Loading screen - Thanks @the0Q9232 
(I changed it a little to make it look like the original 👀...)
Happy Joltidays! A new quest has entered your quest log. Accept the quest and follow @souptaels 
to open today's slot on the calendar.
Toby Fox (creator of Undertale) will be involved as a voice actor and composer in the animated pilot for 'Homestuck'.
It will be produced by Spindlehorse, the indie company behind Hazbin Hotel and Helluva Boss.
VivziePop will also be producing.
I have many doubts 
Roaring Knight: Crossover (Tentative Title)
[WIP 01]
"Grandpa semi, Semi Serif"
I plan to add the grandfather of sans and papyrus to the future remaster. 
9 comments