Bankroll is the amount of money the gambler is going to spend on gambling. It is wise to keep the bankroll separate from the personal finances. It will help you to avoid many financial problems. With Bet Max button the player can play with the maximum number of coins available on this slot machine. If you have been playing one and the same slot machine for some period of time, you will be rewarded with casino comps. With these comps you can get free meals or even cash in some casinos. House Edge is an amount the casinos is sure to receive over a long period of time. Payback is percentage amount of each bet dollar, that is paid back. If you play the slot machine with 86% payback it means that it pays back 86% and 14% is the house edge. Remember that these amounts are taken over a long period of time.