Lost Children Society (LCS), Online Therapeutic Tabletop Role-playing Game for Early-onset Schizophrenia Patients

Inclusion Criteria: * Diagnosis of early onset schizophrenia * Patient who has the capacity to understand the protocol and to perform evaluations * Written informed consent to participate in the study given by the patient or by the parental authority of the minor patient. * Patient with social security coverage Exclusion Criteria: * Intelligence quotient\<70 on Wechsler Adults Intelligence Scale-IV (for 17+ years) or the Wechsler Intelligence Scale for Children V (for 15-16 years). * Personal history of head trauma, neurological disorder, genetic disease. * Co-morbidities: major depressive episode or post-traumatic stress disorder unresolved or resolved within the last 6 months. * Lack of mastery or access to a computer or personal tablet in autonomy * Therapeutic history of metacognitive training. * Patient under guardianship, curators or legal protection * Patient going through a period of exacerbation of positive or negative psychotic signs likely to lead to a full-time hospitalization in a specialized environment within the next 3 months