Arcade machines have long mastered the art of keeping players engaged through clever reward systems and incentives. One of the most iconic methods is the high score leaderboard, which taps into players' competitive instincts by showcasing top performances. Many modern machines incorporate progressive rewards, such as unlockable content or bonus stages, which encourage extended play sessions. Token-based systems, where players earn redeemable points, create tangible value for continued gameplay. Multiplayer modes leverage social competition, while limited-time challenges or events create urgency to return. Some machines even use physical prizes or ticket redemption to blend digital and real-world rewards. These psychological hooks—competition, achievement, and tangible benefits—work together to create a compelling loop that keeps players coming back.