This study addresses the issue of insufficient physical activity (PA) among youths. The emergence of gamified interventions, such as Gamifiter web portal, offers a novel approach to promoting healthy habits and increasing intrinsic motivation for PA. Gamifiter engages users in virtual challenges linked to daily step counts and progress on a digital map, aiming to enhance PA and physical literacy. Involving 107 pupils (12-13 years old), the intervention utilized Garmin VívoFit trackers, with the Gamifiter portal providing individual PA reports, challenges, and interactive educational applications. Results showed a significant increase in daily step counts indicating the positive impact of Gamifiter on PA levels. Attitudes Towards Educational Reality questionnaire and incomplete sentence test results revealed pupils' positive perceptions, high motivation, and satisfaction with Gamifiter. Teachers also praised Gamifiter for promoting PA and literacy, although some desired more customization options. The study emphasizes the potential of gamified interventions to effectively promote a healthy lifestyle. Positive attitudes and increased PA suggest that gamification can be a valuable tool in motivating and engaging pupils in physical activities, fostering a foundation for a healthier lifestyle. In conclusion, Gamifiter's success in motivating pupils to engage in higher levels of PA highlights its potential as a useful tool for promoting a healthy lifestyle. Future studies with larger sample sizes and longer follow-up periods are recommended to better understand the sustained impact of gamified interventions on health among youths.