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Purpose: It is necessary for a good baseball player to have various physical attributes including good muscle strength and sensitive proprioception. Childhood and adolescence are very important in developing these physical attributes, as they are suitable periods for acquiring basic physical strength and favorable physical attributes. Methods: Therefore, this study focused on the comparison of use of technology, physical characteristics, biomechanics, lifestyle, and game usage in children and adolescents. This study aimed to conduct research using basic data for more effective training and guidance. The included participants were 39 middle school students (3rd graders) and 42 elementary school students (6th graders) who participated in the KBO Next Level Training Camp. Results: To summarize the results of this study, there was no significant difference in game usage between young and adolescent players, and no evidence could be derived that suggested game habits affect physical characteristics, kinematics, or technical skills. Secondly, there was a significant difference in the physical abilities of young and adolescent players, regardless of gaming habits. Thirdly, there were no differences in batting speed, attack angle, or order of body movement between young and adolescent players. However, there were significant differences between the average peak hand speed, vertical bat angle, pitch release speed, spin rate, and striking distance (p=.001). Conclusion: According to the conclusions drawn from this study, there were no differences in physical ability, kinematics, or performance between young and adolescent players according to gaming habits.