A Balance Training Game Tool for Seniors using Microsoft Kinect and 3D Worlds Topics: Autonomy and Active Ageing; Computer Vision; Game-Based Approaches towards Health Awareness; Motion Detection; Systems Usability In Proceedings of the 5th International Conference on Information and Communication Technologies for Ageing Well and e-Health ICT4AWE - Volume 1, 135-145, 2019 , Heraklion, Crete, Greece