Board Thread:General Discussion/@comment-26006155-20181123023529/@comment-32182236-20181213192511

The sound effect of Sans tleporting also matches the very beginning of the dounf that initiates a monster encounter. The screen also turns black then as well. Could it be that Sans initiated an encounter, teleported right then, and since that meant he left the battlefield, the encounter was canceled?

As for the Core, your only evidence was its massiveness (Gaster was working with technology we'd call primitive, and he had to make a rearranging CORE), the fact that its security was huge (it protects the only path to the capital of the city, of course security would be high), and that Alphys knows about the research (Time research took place, doesn't mean it happened through portals tha exist in the CORE. Might as well have been Sans' machine instead. Maybe that's what was in the CORE. But now it's broken, so Sans can't go back anyways. Oh, and by the way, what was the machine meant for if it WASN'T the way to travel through time and space? Making a portal to go theough time and space when you already have a way of traveleing through time and spaxe is redundant.)

About the keychain:You CAN see your keychain. The Mystery Key is visible in your inventory. We can experiment and see if Asgore's keys are ALSO visible in the inventory, but they should be..