When your neighbour wins the lottery
I’m not sure if the format of the Dutch postcode lottery is common, but it certainly creates some interesting incentives. In this lottery, a random postcode is drawn from the 430,000 postcodes in the Netherlands, with each postcode having, on average, 19 households. Each person in that postcode who has purchased a ticket in the lottery receives €12,500 for each ticket that they hold (people can buy more than one ticket), and one ticket in the postcode is awarded a BMW.