Learning Management Systems (LMS) have become a standard tool in higher education institutions; however, their use is often reduced to repositories of teaching material. The forum is an LMS tool that allows students’ active engagement, participation, and learning. This study examines the impact of a ‘badge system’, a gamification tool we designed for the discussion forum tool of the Open eClass, a learning management system. We redesigned the existing OpenEclass forum tool, introducing gamification elements like badges, points, levels, and a progress indicator. An A/B study was run in authentic course conditions to compare the two designs and their effect on students’ activity. We draw conclusions on engagement, interaction, and academic performance. This research highlights the potential of gamification in enhancing student engagement and interaction in blended learning environments.