The parts where it exits fullscreen and starts messing around with separate windows is really well done. In a way it's playing with the limits of what defines a demo (ie. the user's desktop is part of the performance), which is something I love to see. Same with the notepad animation part. I wonder if they implemented their own notepad-alike from scratch or it they used something like this: https://kylehalladay.com/blog/2020/05/20/Rendering-With-Note...