Casino Royale is a not-for-profit undercover casino. Wealthy individuals are invited to make a blind bid for a house they know nothing about. If a bid is 50% of the market value of a house, the bidder is the new owner of the house. If a bid is less than 50% of the value the property is donated. The motivation for individuals is that they have a chance to get an expensive piece of property for half the price. The trick is that both luxurious mansions and public housing are being lotteried, and if a bidder pays more than the market value the organization donates the rest. The collected sum goes towards building public housing for low-income communities.