Another way to enhance the effectiveness of gamification is to make it social and fun. You can use game elements and mechanics that foster social interaction, collaboration, and competition among the learners, such as leaderboards, teams, chat, or peer review. You can also use game elements and mechanics that create a sense of fun, curiosity, and surprise, such as stories, characters, themes, or Easter eggs. By making your online course more social and fun, you can increase the learners' engagement, enjoyment, and retention.