Hum, I guess, as some kind of metric maximizing dark pattern.
But my point is that, it's not bringing in a new paradigm of UX that you'd want to immitate.
Though maybe it could if others started making "video games but it's just navigating through a website as you play".
I think it's not a website you make to get hired to make business websites like this to display information (unless maybe it's a gaming company), but if you want someone to make a game on the web then this is a perfect portfolio site.