High roller
A so-called "high roller" is a player who is willing to wager large sums of Chips in the slots that he/she is playing. These players are often given preferential treatment as they are ultimately making an important contribution to a casino's revenue and Chips economy. High rollers usually receive special perks such as a higher payout percentages or exclusive bonuses along the way. It's important to note that high rollers are generally experienced players who usually have a deep understanding of the rules and strategy of any given slot.