GMS v107 - I'm not saying it's aliens...

Maybe I'm blind, but it looks like all the extra NPCs in Amoria were somehow kidnapped by the Gluggulons (just judging from the NPCs named "hostage" in the NPC tab).

Sounds like Masteria wasn't the ONLY place these bastards invaded.

To that I have only one thing to say:

[video=youtube;Aq1qOE9cayg]http://www.youtube.com/watch?v=Aq1qOE9cayg&feature=related[/video]

EDIT:

Will there ever be any reason for strange beings to come to the Maple World beyond mining?

Perhaps Independence Day plot? Take every natural resource, blow the planet up, and then move onto the next rock with all sorts of goodies?