Macgamestore.com has released Monopoly Here & Now for the Mac, licensed by Hasbro and published by Real Arcade. It costs $19.95, and a playable demo is available for download.
Monopoly Here & Now fast-forwards the classic board game to today: Load your account with millions of dollars and move new tokens around the board, buying and selling properties featuring destinations around the United States. The game lets you play against other players or against a computer-controlled AI.
Monopoly Here & Now is a Universal binary and requires Mac OS X v10.3.9 or later.