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Bola tangkas or Indonesian style poker is a casino game using 7 cards to generate the highest card combination. Unlike common poker, Bola tangkas based on five-card draw poker by tossing out 2 other cards. It is played on a computerized console similar in size to a slot machine.

History
Bola tangkas became more firmly established throughout the 1980s and became increasingly popular in casinos, as people found the devices less intimidating than playing table games. Today bola tangkas enjoys a prominent place on the gaming floors of many casinos in Indonesia. These local casinos often offer lower denomination machines or better odds.

Regulation
Game play begins by placing a bet of one or more credits, by inserting money (or in newer machines, a barcoded paper ticket with credit) into the machine, and then pressing a "Deal" button to draw cards. The player is then given an opportunity to keep or discard one or more of the cards in exchange for a new card drawn from the same virtual deck. After the draw, the machine evaluates the hand and offers a payout if the hand matches one of the winning hands in the posted pay schedule.

Players' Club
Many casinos offer free memberships in "player's clubs" or "slot clubs" or sometimes as cash back (sometimes with a restriction that the cash be redeemed at a later date). These clubs require that players use a card that is inserted into the bola tangkas machine to allow the casino to track the player's "action" (how much the player bets and for how long), which is often used to establish a level of play that may make a player eligible for additional comps.

Comps or cash back from these clubs can make a significant difference in the theoretical return when playing bola tangkas a long period of time. In some cases, usage of a club card can even add enough value to the pay schedule of a bola tangkas game with a negative theoretical return to make that same game have a positive theoretical return.