Board Thread:General Discussion/@comment-35615238-20190121141916/@comment-36453001-20190308124206

Gaster is a successful experiment of itself.

It is the only hidden clue that the game do not have a complete closure about it.

If we really want a thing that can actually link up Undertale and Deltarune, yes, Gaster is the thing, but not easy, it is more deeper than all the things mentioned in Undertale and Deltarune, it is the purpose of the game, the purpose of everything and the purpose of itself.