That was the seventh infernal circle summoned by Aladdin Slotters. Imagine being so insecure about your site, and when someone dares to navigate to different browser tags, you start getting them back and giving you some attention.
The Aladdin slot is really designed for mobile. It even uses hamburger menus and oversized icons to make everything on the desktop look very large. Mobile users can think of themselves as lucky, because if they visit this site, they won't have to see stupid, annoying, irritating, meaningless, distracting flashing banners in the browser tab.