The purpose of this study is to investigate the effect of using computer games on the lower basic stage student's achievement in learning English at Al-SALT Schools. The population of this study consisted of all lower basic stage students in AL-SALT schools during the scholastic year 2011-2012. However, the sample of this study consisted of 88 male and female third grade students divided into two groups, the experimental group which under went a teaching experiment using computer games, and control group using the traditional method. The instrument of the study was an achievement test that aimed at measuring students' performance. The independent variables were the teaching method, technique and the computer games. The dependent variable was the student's achievement in English. The findings of the study revealed significant differences in the mean scores between the control and the experimental groups, students' performance of experimental group was better than that of the control group.