A Therapist-Configurable Serious Game System for Upper-Limb Neurorehabilitation: A Pilot Feasibility Study

Upper-limb neurorehabilitation requires adaptable practice. This pilot feasibility study evaluated a therapist-configurable serious-game system in which a handle equipped with an RGB sensor, embedded processing, and wireless communication converted detections of reconfigurable colored targets into control events for 17 games. Thirteen neurological patients began six supervised sessions over three weeks alongside usual care; 11 completed them (84.6%). Including one session completed by each participant who withdrew, 68 sessions were delivered overall (approximately 34 h of scheduled time). From a sensing-operability perspective, no session ended prematurely because of a sensing or other technical failure; RGB recalibration was required in 4 sessions (5.9%). Measures included session logs, System Usability Scale, Intrinsic Motivation Inventory, In-Game Game Experience Questionnaire, Pittsburgh Rehabilitation Participation Scale, Box and Block Test, and exploratory movement analysis. Mean SUS was 76.1 ± 12.6; IMI interest/enjoyment and perceived competence were 6.47/7 and 6.39/7; exploratory post-activity iGEQ positive affect was 3.64/4; and PRPS means ranged from 4.64 to 5.45/6. BBT scores increased descriptively in 11 of 12 assessed affected limbs. The system was feasible and acceptable as a supervised adjunct, but exploratory findings do not establish clinical efficacy.