GameMaker

GameMaker is a game development platform originally created by Mark Overmars at the University of Groningen and later commercialized by YoYo Games. It allows developers to create 2D games using a drag-and-drop event system or its proprietary scripting language GML (GameMaker Language), supporting export to multiple platforms.

Click any badge for full per-format details - what it is, how to open it and how to convert it.