A clock alarm app's business model has attracted attention — users must solve a puzzle to turn off the alarm, and if they fail, $5 will be deducted. The seemingly simple design achieves remarkable business performance through behavioral incentives and economic constraints, with monthly revenue reaching $500,000. This case reflects the core idea of incentive mechanism design in the Web3 era: directly linking user behavior with economic benefits, which can both enhance user engagement and create a sustainable revenue model. Similar penalty mechanisms frequently appear in DeFi and on-chain applications, leveraging economic principles to drive user participation. From a product perspective, this integration of gamification, financial incentives, and psychology is becoming the standard approach for new-generation applications to acquire and retain users.