<![CDATA[This study aimed to analyze the effect of the Sciedugame Mobile application on the development of students’ progressive scientific literacy in junior high school science learning. A quasi-experimental design was employed with two eighth-grade classes at SMP Negeri 56 Surabaya. The experimental class used the Sciedugame Mobile application, while the control class received conventional instruction. Data were collected through pre-test and post-test assessments, classroom observations, and student questionnaires. The results showed that the experimental group achieved higher learning gains than the control group. The average post-test score in the experimental class was 68.38, compared to 58.48 in the control class. The normalized gain (N-Gain) in the experimental group was 0.49 (moderate), while the control group scored 0.36. A t-test confirmed a significant difference between the two groups (tcount = 1.87 > ttable = 1.67 at α = 0.05). In addition, scientific literacy indicators—such as conceptual understanding, scientific process skills, and real-life application—improved more significantly in the experimental class. Observation results also indicated higher implementation quality in the experimental group (97.44%) compared to the control group (76.92%). Furthermore, student responses toward the application were overwhelmingly positive in terms of usability, content clarity, and engagement. These findings suggest that Sciedugame Mobile is a promising mobile learning tool to support progressive scientific literacy in science education.]]>
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