Our work addresses the development of a Serious Game for the diagnostic and learning of persons with cognitive disabilities. In reality, many studies have shown that young people, especially children, are attracted towards computer games. Often, they play these games with great interest and attention. Thus, the idea of using serious games to provide education is attractive for most of them. This work is situated in the context of Project CLES. This project, in collaboration with many research laboratories, aims at developing an Adaptive Serious Game to treat a variety of cognitive handicaps. In this context, this article presents a system that generates learning scenarios keeping into account the user's profile and their learning objectives. The user's profile is used to represent the cognitive abilities and the domain competences of the user. The system also records the user's activities during his/her interaction with the Serious Game and represents them in interaction traces. These traces are used as knowledge sources in the generation of learning scenarios. [ABSTRACT FROM AUTHOR]