 Background: To meet the required intensive intervention hour for treating children with autism spectrum disorder ASD, the investigators developed an automated serious gaming platform 11 games to deliver intensive intervention at home GOLIAH by mapping the Imitation and Joint Attention JA subset of age-adapted stimuli from the Early Start Denver Model ESDM intervention. For the purpose of this study, 24 ASD children will be recruited one half in Pisa and the other half in Paris. They will be divided into two groups: an Experimental group N14 and a Control group N10. The Control group will not go through the training sessions, they will participate only in the assessment sessions. All patients will be referred to treatment as usual, according to local facilities. 