You Unleashed WHAT, Son?!?
Here's another "pulled from the headlines" item for modern RPGs . . . A four-year-old broke a Bronze Age jar in a museum.
File off the serial numbers and use a similar premise in your own campaign. Was the millennia-old vessel used for wine or olive oil – or to store Something Else that may have been let loose onto an unsuspecting world? Sounds like a great hook for a GURPS Monster Hunters adventure . . .
-- Steven Marsh