This research intended to study the effects of utilizing games in Health e-Learning Network on teaching third graders in elementary schools about nutrition. The studied groups of this research were 2 classes of 33 third graders; the two classes were separated into experimental and control group. The experiment was implemented in a four -week duration. The experimental group learned the knowledge of nutrition based on game playing on a National Health e-Learning Network, whereas the control group was lectured with multi-media slide shows. During the learning process, the two groups underwent the steps of pretest, learning and posttest. The result revealed that students received better scores on nutrition knowledge test and dietary behavior assessments in the experimental group, which are evidence of the beneficial impact of Health e-Learning Network's games on nutrition education and dietary behavior among elementary school students. This however, did not show much difference between the two groups in the assessment of nutrition attitude. Within the experimental group, the results did not differ much between the girls and boys in all three assessments.