The video-game based therapy group will receive a conventional physiotherapy and video-game based therapy, two days a week for a total of 8 weeks (15 minutes conventional physiotherapy session+30 minutes video-game based therapy).

The conventional physiotherapy group individuals will be given a conventional physiotherapy two days per week for a total of 8 weeks (conventional physiotherapy session will last 45 minutes).

Video-game based therapy will be designed for the individual basis for the upper extremity.

Assessing functional level and motor function. Gross motor functions of children with CP are classified in five levels with GMFCS. This is a classification system based on the child's self-initiated movements with emphasis on sitting, displacement and mobility.

This is a classification system based on the grasping and releasing objects in daily life, and how they use their hands while holding objects. It is classify the hand skills of children with CP between the ages of 4-18.Children with CP are classified in five levels with MACS. The higher level indicates worse hand function

Abilhand Kids evaluates manual ability in children with upper extremity disorders. It consists of 21 items and confirmed in CP. The lowest score that can be obtained from the scale is 0 and the highest score is 42. It can be stated that higher scores correspond to more difficulty in activities.

It is a practical and useful assessment tool developed to evaluate upper extremity selective motor control. The administration of the SCUES required patients to perform specific isolated movement patterns at various levels including: shoulder (abduction/adduction); elbow (flexion/extension); forearm (supination/pronation); wrist (flexion/extension); and fingers/thumb (grasp/release). The total score of the SCUES ranges between 0 and 15 and higher scores indicate better selective motor control.