This study aimed to explore the effectiveness of using a massively multiplayer online role-playing game (MMORPG) as a tool for improving students’ English reading skills, specifically in identifying main ideas. The study employed a quasi-experimental method to gather comprehensive data, including pre-tests and post-tests consisting of 25 items each, to measure students’ performance before and after utilizing the MMORPG. Additionally, a 15-question questionnaire was used to assess students’ perceptions of using an MMORPG for reading instruction, and semi-structured interviews comprised of five questions were conducted to delve deeper into students’ experiences and opinions. A purposive sample of 35 students enrolled in an English reading course at a university in Nakhon Ratchasima, Thailand was selected for participation. The findings reveal a significant improvement in participants’ post-test scores compared to their pre-test scores (the results of participants’ post-test scores increased from the pre-test scores at 6.657, p = .000), indicating enhanced understanding of main ideas through MMORPG based instruction. Moreover, the majority of participants expressed enjoyment and enhanced learning experiences using the MMORPG approach. This research study has implications for course developers, emphasizing the importance of a systematic process in MMORPG design and exploring the pedagogical benefits of incorporating an MMORPG as an alternative teaching method for similar subjects.