Among people with cognitive deficits, those with a dysexecutive syndrome are waiting for new rehabilitation solutions. Based on an extensive literature analysis, a multidisciplinary consortium has been created to specify and develop S'TIM, a therapeutic and persuasive Serious-Game played on a 48 inches robotised touch-table, which immerses patients in a virtual world through an elaborated scenario and various missions. This device has three main stakes. First, to break anosognosia so each patient could be intrinsically motivated and the actor of his own rehabilitation. Then, to achieve enough metacognition enabling the patients to build their own strategies and to select the most appropriate one in each situation. Finally, to facilitate the transfer of these strategies into everyday life. Changes in the schedule of therapists are also expected.