This chapter explores the role of gamification in language-learning chatbots, examining its core elements, advanced features, benefits, and challenges. Gamification, which integrates game mechanics such as points, badges, and leaderboards, enhances learner motivation, engagement, and retention. By analyzing key theoretical foundations, including Self-Determination Theory, the chapter discusses how gamification fosters intrinsic and extrinsic motivation in language learners. Case studies of successful applications such as Duolingo, Babbel, and Mondly demonstrate the effectiveness of these gamified systems in real-world settings. Additionally, the chapter highlights challenges such as learner diversity, content overload, and the balance between intrinsic and extrinsic motivation. Finally, future trends, including the integration of AI, NLP, augmented reality, and social learning, promise to revolutionize the gamified language-learning experience. This comprehensive analysis underscores the transformative potential of gamification in language education.