To try and give context, Homestar Runner was made in Adobe Flash and in its time rectangles were notoriously uncool in web design. Flash sites weren't limited to the rigid structure of a typical webpage, so you would often be mousing over and finding objects to interact with in whatever whimsical shape the designer wanted. Homestar makes lots of use of hovering the mouse, so if you're on mobile you might be missing half of the experience.

On this loading page, the small blue flag is the important part, which takes you to the main page that people remember