Abstract
This paper aims to report the practice of essay writing activities after debate games for the 5th year KOSEN students in an elective liberal arts class. They experienced three kinds of debate: value debate, policy debate, and public debate. They engaged in research activities, debate games, essay writings, peer-reviews, and rewrite activities. After the last game, they wrote essays to propose political plans and made English videos individually to present their plans. Questionnaires were given after each activity, and it appeared that debate activities boosted their ideas in essay writings and peer review comments facilitated their rewrite activities.