Game creator: R to record what you can do best of a square wasd to move around Space (very quickly) to stop recording your attempt of a square. User: P to draw your square. L to stop. you can also use the mouse to draw.
I added the ability to draw with mouse(Note: it may not draw a solid line when using mouse).I also made it so you can draw with wasd without pressing "r".I also used custom blocks for drawing.