Abstract: This study aimed at investigating the effectiveness of using electronic educational games to enhance achievement and retention of learning in mathematics for primary stage pupils. A quasi- experimental design was used. The study sample consisted of (62) participants from sixth grade primary school, which was distributed into two groups: experimental group (N=32), and control group (N=30). Data was collected through Ratio test. Study results revealed that: There is a statistically significant difference at level (α ≤ 0.05) between the mean scores of the pupils of the experimental and control groups in the post-application of the achievement test in ratio unit in favor of the experimental group. There is a statistically significant difference at level (α ≤ 0.05) between the mean scores of the pupils of the experimental and control groups in the delayed application of the achievement test in ratio unit in favor of the experimental group. Keywords: electronic games, feedback in games, retention of learning