a slot machine has a wager receiving device to determine what currency is inserted into the slot machine . a processor is coupled to the wager receiving device . the processor executes program instructions causing the processor to : receive signals from the wager receiving device of the currency inserted into the slot machine ; calculating a number of credits based on the currency inserted into the slot machine ; and providing one of multiple credits for each paid credit or multiple plays of the slot machine per credit paid regardless of outcome of a previous play .