Gamification has become an effective strategy for increasing user engagement in fields such as education, healthcare, fitness, and enterprise applications. The incorporation of artificial intelligence into gamified systems has enhanced their impact but also raised significant concerns about data privacy and ethical data use. This paper investigates the moral implications of data collection and privacy in AI-driven gamified systems, focusing on the balance between the advantages of personalisation and the protection of privacy rights. By conducting a comprehensive review of the literature, case studies, and regulatory frameworks, we identify major ethical issues, including informed consent, data minimisation, algorithmic transparency, and the risk of manipulation. We present a multi-layered ethical framework that incorporates privacy-by-design principles, user empowerment strategies, and accountability mechanisms to support the responsible development and implementation of gamified systems. Our analysis indicates that although gamification provides notable benefits, its adoption must be guided by careful attention to privacy principles, regulatory requirements, and ethical responsibilities to users. This research advances the ongoing discussion on responsible AI and offers actionable recommendations for stakeholders within the gamification ecosystem.