Inclusion Criteria:  Patients with prescription for rehabilitation* ≥ 50 years old Able to score ≥ 20 at the Mini Mental State Examination (MMSE) Able to provide a signed informed consent Physically able to stand for at least 3min without external support (self-report)  Exclusion Criteria:  Mobility or cognitive limitations or comorbidities which impair the ability to use the training games and overall system Conservatively treated osteoporotic fractures Previous or current major psychiatric illness (e.g. schizophrenia, bipolar disorder, recurrent major depression episodes) History of drugs or alcohol abuse Terminal illness Severe sensory impairments (mainly visual, auditory, color blindness)  Insufficient knowledge of German to understand the instructions/games  *In the rehabilitation clinics involved as study centres, mainly persons suffering from cardiovascular diseases (clinic Seewis), persons suffering from neurological diseases (esp. Parkinson's Disease according to the United Kingdom Brain Bank criteria) (clinic Zihlschlacht) and geriatric patients (clinic Dussnang) will be included in this study.