Intellectual Disability (ID) is characterized by deficits in intellectual functioning and adaptive behavior, necessitating customized therapeutic interventions to improve daily life skills. This paper presents the development and evaluation of Space Exodus, a task-based role-playing Virtual Reality (VR) game designed to support therapy for children with ID. The game integrates everyday life scenarios into an immersive environment to enhance skill acquisition and transfer. Functional tests and preliminary experiments demonstrated the system's stability, usability, and adaptability, with 70--80\% of participants demonstrating successful skill transfer to new challenges. Challenges, such as VR discomfort, controller misoperation, and task complexity, were identified, emphasizing the need for ergonomic improvements and adaptive guidance. The results provide empirical evidence supporting VR as a promising tool in ID therapy. Future work will focus on refining gameplay mechanics, enhancing user guidance, and expanding accessibility to broader populations.

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