in A6A6I5, the choose your character flashes on pages like https://www.homestuck.com/009596 allow you to hover over them to see special pictures. on mobile, this cannot be done, as tapping does nothing. in the (really low quality sorry) gif i included you can see the comparison between the current and old homestuck.com site, where on the old one you could tap the icons and it would show you the pictures.