Mild mentally retarded children are children with intellectual disabilities who can still be developed academically. As one aspect that can be developed, namely, the ability to recognize land transportation. The use of learning media in the form of Land Transportation Educational Games in Indonesian abbreviated (GETAR) Based on CAI is one of many ways in the context of learning the ability to recognize land transportation for mild mentally retarded people. CAI Based Land Transportation Educational Game GETAR is an interactive medium, because it stimulates users to be directly involved in the game. This study uses a quantitative approach with a pre-experimental one group pretest-posttest method. The subjects in this study were five participants who were students with mild mental retardation in grade 7 SLB Negeri Batu. This research activity is divided into three stages: pretest, giving treatment, and posttest. The results of the study describe the average pretest and posttest. Respectively worth 51 and 81. With the values of Asymp.Sig. (2-tailed) of 0.041, then H1 is accepted and H0 is rejected. So, the CAI-based GETAR Land Transportation Educational Game has an effect on increasing the ability to recognize transportation for mentally retarded children at SLB Negeri Batu.