Bowlero was losing tens of millions annually to a 160% turnover rate and frequent shift callouts across 11,000 employees. To stabilize this frontline workforce, we designed a native mobile platform merging standardized training with competitive gamification. By introducing leaderboards, tangible rewards, and real-time feedback, we transformed the hourly grind into an engaging experience. The pilot delivered immediate business value: 72% active usage, an 83% training completion rate, and a 13.5% drop in callouts, providing leadership with a proven blueprint for long-term retention.