In this workshop, the presenters introduce Mini-Bibliobattle, a simplified variation of Bibliobattle. Bibliobattle refers to a social book presentation game where presenters introduce their favorite book for five minutes, followed by a three-minute Q&A session, and votes select the Champion Book from participants. This game has been spreading in Japan since it was developed in 2007, and teachers started using it in a language classroom. We will demonstrate the game at the site and provide some tips to instruct in combination with extensive reading. Students' perceptions of the game from our practices will also be provided.