Interested parties can now sign up for the aforementioned all-day scavenger hunt Metropolitan Odyssey 2008: Sigma 182, brought to you by Metro Metro. In typical MM fashion, the game is already afoot: The title of the hunt is also a preliminary clue to its location. Last year’s hunt explored the West Village, and the exhausting 2006 hunt began near City Hall and sprawled across the Brooklyn Bridge into DUMBO.