I did some rough measurements last night. The vertical clearance in the hatch on the back is about 27 inches. The depth is not quite 5 feet to the back of the front seats. You definitely cannot fit a NIB, but unboxed maybe you could fit it sideways and leave the hatch open a bit. Remove the head and I'm sure you could make it work. Overall, I am not desperate enough to move a game that the Kona would be my first choice. Find a friend with a bigger vehicle, or rent a small utility trailer if you've absolutely gotta move a game in a hurry.
I still have my old van for now, which has gotten beaten to pieces with all the games I have moved in it over the years. Outside of hauling games, I have no reason to keep my van around and pay insurance on it and keep it maintained, as I have slowed down quite a bit in buying new games the last year or so. I may look into buying a small trailer I can haul with the Kona for those emergency last minute game pickup trips.