Markus Hendrik "Mark" Overmars (Dutch pronunciation: [ˈmɑrkɵs ˈɦɛndrɪk ˈmɑrk ˈoːvərˌmɑrs]; born 29 September 1958 in Zeist, Netherlands)[1] is a Dutch computer scientist and teacher of game programming known for his game development application Game Maker. Game Maker lets people create computer games using a drag-and-drop interface. He is the former head of the Center for Geometry, Imaging, and Virtual Environments at Utrecht University, in the Netherlands.[2] This research center concentrates on computational geometry and its application in areas like computer graphics, robotics, geographic information systems, imaging, multimedia, virtual environments, and games.