The purpose of the study is to assess the varied intensities of games specific circuit training on endurance of male handball players. thirty (30) male Inter Collegiate Handball players were selected from Alpha College of Engineering, Thirumazhisai, Chennai, Tamilnadu, India. These subjects were randomly distributed into three groups namely moderate intensity game specific circuit training group (MIGSCTG: n = 10), high intensity game specific circuit training group (HIGSCTG: n = 10) and control group (CG: n = 10). Endurance was selected as criterion variable and tested through Cooper twelve minutes run and walk test. The moderate and high intensity game specific circuit training was administered 3 days per week for eight week. The collected data was evaluated using two way repeated measures ANOVA on last factor. Interaction effect is significant for endurance, since the obtained F ratio of 61.29 is greater than the required table value of 3.3541 at = 0.05 for the df of 2 and 27. It is concluded that after eight weeks of training in MIGSCTG elicited 7.01% of improvement but HIGSCTG displayed 17.91% of improvement in endurance. This clearly shows that high intensity training effective in improving endurance greater than moderate intensity training.