tobyfox has confirmed that DELTARUNE Chapters 1-4 will let you use mouse controls in a “very small special room” on Nintendo ...

It's also been confirmed that you'll be able to import your save files from either the Switch demo of Deltarune Chapter 1& 2 or the full Deltarune game on original Switch.

Deltarune has featured two bonus bosses that can be fought after the story: Jevil in Chapter 1 and Spamton Neo in Chapter 2. Defeating each one will reward the player with a Shadow Crystal ...