The aim of Lockdown is to get into the city, and leave with as much money as possible. Players receive cash by robbing various stores in the city. Each time players rob a store, they take a card. Each card has two actions, which effect various players. Some of the cards increase the Police presence in the city. Once the Police presence reaches it's limit, the city is put into complete lockdown. Any players still in the city at this point, are arrested! The game ends once all players have escaped the city, or until the Police declare a full city lockdown. The player who manages to escape with the most, wins!

http://garphill.com/lockdown