i toyed with the same idea, do a frozen and let it go

Just buy a cheap hand truck, take some good quality straps, strap the game so it is one unit with the hand truck.
this is to make sure that the hand truck won`t disappear underneath the game.
Take it slow, one step at a time, and synchronise. count to 3, one step down. 5 minutes later you are done.
I have done it with more than 20 games, works like a charm, and easy.
One thing to remember, the person in front carries all the weight, the one in the back makes sure that the game doesn't tip over.

And watch where you put you fingers!

Good luck!