Board Thread:General Discussion/@comment-35757757-20190610225912/@comment-32182236-20190610233828

We actually know Deltarune, (And I mean in its current form, with the name Deltarune, not the old RPG that was scrapped before a single room was made) was in development for a long time.

The website deltarune.com was archived on August 17, 2016.. https://web.archive.org/web/20160817183540/http://www.deltarune.com/

This was less than a year after the release of Undertale.. And when the wingdings is translated...

THREE HEROES APPEARED TO BANISH THE ANGEL'S HEAVEN.

This is what we're told the plot of Deltarune is by Ralsei. So the clues of foreshadowing were there since 2016.