There are many types of pachinko machines and parlor regulations, but most of them conform to a similar style of play. In order to play pachinko, players can buy metal balls by inserting either cash, a pre-paid card, or their member's card directly into the machine they want to use. At parlors offering an exchange rate of 4 yen per ball, 1000 yen will get you 250 balls. These balls are then shot into the machine from a ball tray with the purpose of attempting to win more balls. The pachinko machine has a digital slot machine on a large screen in the center of its layout, and the objective here is to get 3 numbers or symbols in a row for a jackpot.