Once the shipment arrives at the kingdom it seems that all the boxes are empty and for some reason most of the coins were replaced with small rocks and acorns.
"The gods have chosen to smite us today my brethren...but we must fight back"
"How damn it we're just men...insects before their power"
"We will have to find the dagger"
Real world scientists have accidentally opened a tear in the fabric of reality, transporting their laboratory into the game world. Unable to repair and/or refuel their equipment in this (to their minds) primitive world they are now trapped.