As an international language, English plays a crucial role in global communication. Mastery of English is an essential provision for students to face the challenges of the world. This research focuses on the development of English learning media called ‘StoryQuest English’ by applying the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The analysis stage includes identifying students' learning needs through interviews and literature review. The design stage includes preparing flow-charts related to application features, and making storyboards for story illustrations. In the development stage, the app was built using relevant technology, namely the Unity game engine, with initial testing to ensure basic functionality. Implementation was done by introducing the app to a group of students for use in learning. Evaluation through blackbox testing showed that all application features functioned well according to specifications. Material expert and media expert validations were also conducted to assess the content quality and learning suitability of the app. Pretest and post-test testing using the N-Gain formula showed an increase in value of 61.6%, which is classified as ‘quite-effective’.
                        
                        
                        
                        
                            
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