Low mathematics scores in the U.S. have been pressing educators to find engaging strategies and effective tools to promote math performance. While emerging technologies, such as digital math games, show promises in improving mathematical education, existing studies have garnered mixed findings and thereby necessitating further investigation. This study aims to examine the impact of skill-based online math games on students' math performance and attitudes, as well as students' perceptions of the games. Thirty-eight students ranging from fifth to eighth grade participated in the study. The results showed a mixed picture of the impact of the online games on math performance and attitude. Implications and recommendations for future research are also discussed.