Objectives: Children with computer game addiction have a risk for delay in development of cognitive functions. There are evidences that “digital environment” has negative effect on the development of visuospatial functions. The goal of this study was to reveal the effect of visuospatial training on visuospatial functions in children with computer game addiction. Methods: We used questionnaire for parents to reveal children with computer game addiction. The participants were 24 children at the age of 6 with computer game addiction. Children were included and randomly assigned to training conditions according to a 2×2 cross-over design. Both groups of children have participated in 36 weeks of training (visuospatial training vs. conventional motor exercises). Visuospatial training included different visuospatial exercises both on motor and cognitive level. We used subtests from NEPSY which are designed for assessing visuospatial functions (Arrows, Block Construction, Design Copying, Route Finding). Effects of training were analyzed by means of an ANOVA for repeated measurements. Results: The ANOVA has revealed (p<.05) that for two subtests (Block Construction, Design Copying) the visuospatial training was superior to the conventional motor training, with effect sizes in the medium-to-high range (0.63-0.84). Conclusion: The findings from this study suggest that visuospatial training has positive effect on visuospatial functions in children with computer game addiction. However, we need to do further investigations to prove the effectiveness of visuospatial training for children with this addiction.