Suika game (also known as Watermelon Game) has a simple but attractive gameplay mechanism. Players will drop each type of fruit into a box, and when two similar fruits touch each other, they will merge into a larger fruit, eventually aiming to create a watermelon - the highest level. It is this “merge - evolve” mechanism that creates curiosity and excitement, because each merge brings a feeling of satisfaction. The addictive factor comes from the combination of luck (randomly falling fruits), strategy (choosing where to drop to avoid filling the box) and the feeling of “almost success” when the player is close to reaching the watermelon. The fast pace, easy-to-understand but difficult-to-conquer gameplay make Suika Game a game that is both relaxing and easy to “engage” players in continuous retrying.