The number 7 is frequently used as a high-value symbol in slot machines; combinations of three 7s usually yield large payouts. A largslots paypaler theme of chance and luck that permeates slot machine gameplay is included in the "slot meta 777" concept. The goal of aligning three 7s on the reels to win a jackpot is a common strategy used by players, and it is an essential part of the slot machine experience.