Purpose: This study aims to analyze the effects of digital teaching materials on the theme of sustainable lifestyle integrated with Ethno-PjBL on knowledge and creative thinking skills in learning in the Merdeka Curriculum. Theoretical Framework: The idea behind the development of digital learning materials on the theme of sustainable lifestyle is to promote awareness and practice of sustainability among students through the integration of technology in learning. By combining a project-based learning model enriched by local cultural values (Ethno-PjBL), students are not only invited to understand the concept of sustainable lifestyle, but also how to apply it in their cultural context. Method: This study used a quasi-experimental method with a posttest only control group design. The sample of this study was grade X students at SMAN Kota Jambi, with the experimental class using integrated digital teaching materials ethno-PjBL and the control class using conventional learning methods. Data were analyzed using descriptive statistical tests, Kolmogorov-Smirnov normality tests, and Mann-Whitney tests. Results and Discussion: Digital teaching materials on sustainable lifestyle themes integrated with ethno-PjBL have a positive impact on students' knowledge and creative thinking skills. The experimental class using the digital teaching materials showed better results compared to the control class using conventional learning methods. Research Implications: The results of this study support the integration of sustainable lifestyle-themed digital teaching materials with the Ethno-PjBL approach, which not only strengthens students' academic knowledge, but also fosters creative thinking skills and awareness of local cultural values. The findings of this study can encourage educators and policy makers to further adopt and develop contextual and relevant digital teaching materials, especially those that focus on global issues such as sustainability, but are still integrated with local wisdom. The implications of this study also open up opportunities for further research to explore the potential of digital teaching materials in other subjects or at different levels of education.