Virtual reality (VR) presents an innovative and powerful approach to foreign language teaching, offering immersive and interactive environments that support vocabulary acquisition in engaging and meaningful ways. This study investigates the potential of VR using the self-developed application GermanVR, specifically designed to enhance vocabulary learning in German as a Foreign Language (GFL) lessons. Conducted with student teachers at Uludag University, the research employed a quantitative approach, including pre-tests, immersive learning sessions using GermanVR, and post-tests to evaluate the impact of VR on learners' motivation, vocabulary acquisition. The results reveal that GermanVR significantly increases learner engagement, accelerates vocabulary learning, and provides realistic, context-rich experiences that closely mirror real-life scenarios. These findings emphasize the potential of VR as a transformative tool in modern language education, showcasing how GermanVR can reshape traditional instructional practices and offer students more dynamic and impactful opportunities for language development.