The aim of the study is to investigate effects of structured exergame program on upper extremity functions and trunk control in children with Cerebral Palsy (SP). A 3 phase randomized controlled trial has planned to conduct. In the first phase, baseline assessments will be completed for all participants who are eligible to participate. After the baseline assessments, randomisation will be completed for Exergame and Activity Based Exercise groups. During this phase suitable video games for exergame program will be selected. Analytical Hierarchy Process (AHP) will be used to collect expert opinion for most effective video games for upper extremity functionality, postural control, GMFCS I-II-III levels. Second phase of the study will be started afterwards. Upon completing second assessments, interventions for both groups will be conducted. Third assessments will be completed after interventions and outcomes will be analyzed for primary results. The third phase of the study planned as follow-up period. All participant will continue their routine NDT trainings and follow-up assessments will be completed after 3 moths of the second assessments. Final results will be analysed for all participants.