Task-based, communicative approaches to language teaching have established a well-earned footing at Japanese universities, but the enthusiastic rejection of outdated teaching methods occasionally risks underemphasizing the importance of continued vocabulary acquisition. CALL offers a solution to this problem by providing autonomous, asynchronous, personalized vocabulary learning outside of class. The proposed poster focuses on exploring the use of a paid, gamified vocabulary acquisition site, WordEngine (no affiliation to the presenter), as a possible solution to the underemphasis of vocabulary acquisition in Japanese universities. The poster presentation will cover three main aspects: the user interface, the experience as an instructor, and students’ engagement. First, the user interface will be explained and demonstrated on multiple devices for participants to experience firsthand. Second, the presenter will draw on several years of experience assigning WordEngine, setting up student accounts, and retrieving results for grading. Finally, displayed student usage data and questionnaire results will provide insights into student experience. Participants will gain knowledge of WordEngine's pros and cons, an understanding of instructors’ responsibilities, and insights into students' engagement with the site.