I haven't seen anyone bring this up yet, so I figured I would.
Someone on my buddy list was talking about this so I tried it just to see what all the fuss was about. Apparently if you go into a Monsteropoloy game, log out, then log back in, you end up here:
Spoiler
If you move to the left, there's a Spinner Ticket NPC along with the Nut Coin Shop, which I'm assuming we aren't meant to have access to yet.
The equipment tab is all the 9th Anniversary Black equipment, weapons, and secondary weapons. The Special is this stuff:
Spoiler