Pr3tz31 | Modding Deltarune (Quick Test) @S41tyPr3tz31 | Uploaded November 2018 | Updated October 2024, 2 hours ago.
Only changing the Rouxls Kaard's shop and the floor of the throne room, this video is to simply show that yes, I have found a way to edit the files (or at least the sprites so far.)

Update: I found out how to edit text as well.

Lil' Q&A:
Q: How'd you rip the sprites?
A: QuickBMS

Q: How'd you repack the sprites back into the game?
A: QuickBMS