h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

I found this list of most other national versions.

http://www.muurkrant.com/monopoly/country.html

That has now expired, so try this:
http://www.hasbro.com/games/kid-games/monopoly/

I have, to date:
BASED ON THE ORIGINAL:
The original red-box Monopoly circa 1970
Vintage Monopoly (in a wooden box)
Original Monopoly (in a wooden box)
Deluxe Monopoly (x two, slightly different versions)
Here and Now Monopoly (x two, slightly different versions)
2000 Monopoly
Millenium Monopoly
Travel Monopoly
Pocket Monopoly
Total - 11

NATIONAL SETS
Australia Monopoly
China Monopoly
France Monopoly
Germany Monopoly
Total - 4

CITY SETS:
Beijing Monopoly
Kent Monopoly
Manchester Monopoly
Newcastle and Gateshead Monopoly
Total - 4

QUIRKY SETS:
World Cup France, Monopoly
The Simpsons Monopoly
Star Wars Monopoly
Put-Yourself-In-The-Game Monopoly (Where you can design your own properties via a computer printout)
Top Trumps
Total 5

So only 22 to date... Thought it was more, but always glad to accept or pay for more.

MMF