Objective. This study aimed to investigate the effect of virtual therapy on the motor ability of hemiparetic children's upper limb. Method. The sample consisted of three hemiparetic children (8.66±2.30 years). The Pediatric Evaluation of Disability of Inventory (PEDI) and Motor Activity Inventory (MAL) were used for initial and final assessments and the number of hits in each game was counted as well. For the treatment, a hardware (video game) was used, Nintendo brand, model Wii Sports software, using the games (tennis, baseball, golf, boxing). During a period of two weeks, the therapy lasted for 1 hour and 10 minutes each day, consecutively. Results. There was statistical difference in two children in the PEDI (p=0,00) and in the MAL, related to the quality of the upper limb's use (p=0,00) where as relation to the frequency of use, there was statistical difference in all three children in all four games had a increase. Conclusion. 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