Game mechanics & features. These games usually have three or five reels with different symbols, such as the well-known bells, fruits, and sevens.refused slots for spring 2024 Aligning matching symbols across predetermined paylines—which can differ from game to game—is the aim. Bonus features that increase your chances of winning, like multipliers, free spins, & wild symbols, are also included in a lot of contemporary 777 slots. Increasing Your Winning Chances.