Gamification uses different types of rewards to motivate people:

• Tangible/intangible: Tangible rewards are physical items like gift cards. Intangible rewards are non-physical, like points or badges.
• Expected/unexpected: Expected rewards are known in advance. Unexpected rewards are surprises.
• Task non-contingent rewards: You get these without doing anything. They are rare in gamification. For example, receiving a welcome gift just for signing up on a website.
• Engagement-contingent rewards: You get these for starting a task, like visiting a website or writing a review.
• Completion-contingent rewards: You get these for finishing a task. For example, receiving a certificate for completing an online course.
• Performance-contingent rewards: You get these for doing well on a task, not just completing it. For example, winning a prize for being the top performer in a contest.