Abstract-This paper describes the design, development, implementation and user evaluation of an interactive modular tile system, aimed to support balance rehabilitation of patients recovering from a stroke. The REHAP Balance Tiles system is an innovative tool, which has been developed in close collaboration with therapists and patients in stroke units of health rehabilitation institutes in Sydney, Australia and Eindhoven, the Netherlands. The system was designed to allow therapists to tailor exercises for each patient by changing the physical configuration of tiles. We report a user evaluation in a rehabilitation clinic, which lasted five weeks. Results indicate that the tiles can fulfill their envisioned purpose. They are received well by therapists, meeting requirements for ease of use, motivational feedback, modularity and flexibility.