Extensive Reading (ER) is considered to be one of the effective and interactive reading methods on language learning. But now, ER is challenged in this era because of students' passive participation and their declining motivation due to the improvement of technology, especially AI. This research is made to use these challenges on how AI-powered gamification can enhance ER and examine its effect on students' engagement in learning behavior. To support our research, in this paper we use a mixed-method approach (quantitative & qualitative) through questionnaires with some AI tools, such as Ai-based reading platform, quizzes, and gamified features AI-based reading platform, quizzes, and gamified. Our research will be focusing on EFL Learners in Sanata Dharma University as the subject of our research. The data analysis shows us that AI-Gamification in ER increased student initiative and motivation to read. It also improved interaction with reading materials and attracted a positive learner attitude toward gamified AI tools. So, AI gamification offers us an innovative path for ER revitalization and supports learner autonomy and interactive learning. Therefore, we call for deeper interrogation of EdTech in language curriculum.