itch.io

Huh weird, I haven't seen that before. Try updating your graphics drivers. If that doesn't work, try this:

Create a new text file inside the folder you extracted the game in, name it however you want, then open it and paste this:

"Deltarune Lightners Live Plus.exe" --rendering-driver opengl3

change the file extension from ".txt" to ".bat".

Now open the ".bat" file, which should run the game