This study aims to determine whether or not using a Werewolf game is effective to improve students' speaking skills. This research was conducted at SMA Islam Sultan Agung 1 Semarang in the academic year 2023/2024. This study used a quantitative method with pre-experimental design. In this study, the sample experimental class was XI-5 with 27 students. A try-out was conducted in class XI-6 to calculate the validity and reability of the pre and post-test. The instrument of this study was valid tests in the form of a pre and post test. The pre-test was given before treatment and the post-test was given after treatment. Pre-test and post-test data were analyzed by using SPSS version 27. The result of the average pre-test is 43.41 and the post-test is 71.85, indicating a significant improvement of 28.44. The analysis results shows that sig (2tailed) 0.000 < 0.05 which means H0 is rejected and Ha is accepted. It is concluded that the use of the Werewolf game was effective to improve students' speaking ability.

Keyword: pre-experimental research, speaking skill, Werewolf game,