From the publisher:
Officially licensed Monty Python Monopoly-esque Board Game
You, too, can quest for the Holy Grail, as knights buy hovels, build castles, take a ride on a Llama, or charge excessive groats for hanging out at your Castle of Aaarrrggghhh in this Monopoly variant based on Monty Python and the Holy Grail.
Python-opoly is a game of buying and sell based on the funniest movie ever made, "Monty Python's Quest for the Holy Grail."