Board Thread:General Discussion/@comment-32182236-20181101220519/@comment-32182236-20181108175323

We do have some things to work with. Like the monsters probably winning the war this time around. These seem like the same characters, under different initial circumstances. Alternate versions.

Since the very LAWS of the two worlds are different (In Undertale, DT determines S/L/R powers, not just random shines), we can't JUST call them alternate timelines that split off from a certain point. They were different from the very start. (Well, either that or the laws can change? .. I'm going with the former. We'll have to see how things go later on.)