Low interest in learning mathematics among students remains a significant challenge in education. One approach that can be applied to enhance students' interest is gamification through class-based competition. This study aims to explore the impact of implementing the Rise of Champions (RoC) game on improving students’ interest in learning mathematics. RoC is an educational game competition designed in four stages: Brain Arena, Memorizing, Equation Scramble, and Cryptarithm War. This study employed a descriptive qualitative method with 60 students from 20 different classes at SMAN 1 Lemahabang as participants. Data were collected through observation, Likert-scale questionnaires, and in-depth interviews. The findings show that RoC was effective in improving all four indicators of students’ learning interest—enjoyment, curiosity, attention, and engagement—with an average score above 3.5. The fact that tenth-grade students emerged as champions also contributed to increasing motivation and competitive spirit amongother students. In conclusion, RoC is proven to be an effective and enjoyable alternative learning medium to boost students' interest in mathematics through healthy and engaging competition.