Idle Game Maker is a very easy tool, it requires little to no coding experience, hundreds of games have been made with that tool throughout the years, maybe more. Idle Game Maker is used to make Idle and Clicker games, which are basically games which require one to be idle to advance, most also make it so that when one clicks much, game progress is accelerated. The tool provides sections for buildings, upgrades, clickables, resources, and achievements. They also provide you with the ability to make custom stylesheets, for those with coding experience. Otherwise, you can make a good game with no coding experience, only reading the documentation made by Orteil, also known as the Idle Game Maker Documentation.