Windowing - simple-entertainment/simplicity GitHub Wiki

Chances are that you're going to want this game of yours to run in some sort of visible area otherwise known as a window. Simplicity does not provide any window implementations. To create a window for your game to run in you'll need to use one of the windowing plugins like FreeGLUT or WinAPI. Alternatively you could create your own!

The Window Engine

To create your own window engine just extend WindowEngine.