Board Thread:General Discussion/@comment-37334388-20190301031034/@comment-32182236-20190316233112

He never said there'd be a sequel, just another game set in Undertale's world.

Deltarune does not fit this description, however. And even if it did, Toby said he'd work on the new game after he finished Undertale, not start back in 2012!

I'm hoping for a prequel, that sheds some more light on Suzy.