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This work describes the way in which serious games are used in virtual reality for fine motor rehabilitation in an upper limb, as a possible rehabilitation tool for patients who have suffered a cerebrovascular accident. A glove equipped with flexible sensors was built, which allows to move a virtual hand on the computer. A virtual environment was implemented in Unity 3D where the patient is registered, and where his rehabilitation is stimulated through four games under the supervision of the therapist. The four implemented games allow developing the spherical, cylindrical and pincer grasp, as well as the global mobility of the fingers. The system was tested with 12 users. It is expected that the project developed can become an additional tool for the therapist to schedule various rehabilitation sessions for the patient. [ABSTRACT FROM AUTHOR]