You are a Multimillionaire. Having nothing better to do, you and your multimillionaire friends got together and decided to wager on who could design the most prestigious hotel-casino on the Vegas Strip.
And so you began your grand design, starting with nothing but your brains, an empty shell of a building, and your fortune. All players compete to build the most famous hotel/casino.
You soon discovered that wasn't enough. Local construction resources are limited, and you now find yourself bidding against your friends to get those resources.
Room tiles representing slot machines, lounges, restaurants, and other casino-related places appear on a central board and the players hold auctions to win the rights to have those rooms in their building, garnering them income, population, or fame.
Bidding wars escalate, values fluctuate, and designers renovate until finally the hotel/casinos are put to the test to determine whose garners the most fame.
The competition is fierce and the stakes are high. In fact, the stakes are the very hotel-casinos you're building. The winner takes them all!