The prisoners are running and they must be caught before they get out. Deploy the plumbers to contain the prisoners. Put as many plumbers as you want. You must place the plumbers in the available areas. Ben and Rook will be helping. Placing of the special unit must be done very wisely because one of each will be available. So basically this is a defense based game and you will need to have very good strategies in order to be successful. You will have to do a series of things correctly in order to be successful.