High Quality Content by WIKIPEDIA articles! GameMaker (originally named Game Maker and often abbreviated to GM) is a Windows and Mac IDE originally developed by Mark Overmars in the Delphi programming language. It is currently developed and published by YoYo Games, a software company in which Overmars is involved. GameMaker allows users to create video games without any prior knowledge of programming languages. GameMaker allows users to create games much faster, so it is sometimes used as prototyping engine.