The integration of culture-related activities into lessons improves language training. The EnglishQuest module represents a different approach to learning English by incorporating local cultural immersion into activities. Hence, the study aims to develop a module that explores the local culture and provides learners with a rich and authentic experience that fosters a deeper understanding and appreciation of the local culture as an English language learning tool. The ADDIE model, which comprises five stages including analyzing, designing, developing, implementing and evaluating stages, was adopted. The activities in this module focus on improving students’ pronunciation, speaking, listening, comprehension, and writing. Ten (10) activity topics include the Sound of the English language, local endangered animals, local dishes, local wedding customs, local climate, local versus origin language translation, local costumes, local games, local dance, and local musical instruments. The module utilizes various instructional methods, including role-play, multimedia material, real-world situations, individual presentations, and group projects, to actively include students in critical thinking and intercultural communication. Preply, an English placement test assessment method, was utilized to examine Japanese students’ English proficiency level before and after undergoing a program that employed the EnglishQuest Module. The Preply post-test results show that some students have improved their level compared to the pre-test results. The module has a measurable impact on students' language skills, validating its efficacy as a language training tool.