Similar psychology:
Gamification could help reduce churn, as streaks and milestones give users a reason to keep returning, i.e., 'okay, just one more milestone'.
Gamified goals, such as daily challenges framed around a chosen reward, may increase feature usage by nudging users into parts of the product they'd otherwise skip.
Gamified loops like daily goals and streaks might help users form habits around your product, as the rewarding loop makes coming back feel automatic.
Gamified mechanics like lives, coins and levels could increase users' motivation to put effort into tasks, making even dull chores feel worth completing.
Celebrations, variable rewards and mini games may increase users' enjoyment, as gamification turns routine moments into small, satisfying surprises.