What Is This..., page

I was trying to access the RSS feeds when I noticed the latin word "unus" at the bottom of all forum pages in extremely small font. I clicked it and went to this site. What exactly is it and can someone give me a translation of the page text?

it's to do with the black labyrinth game
check the games forum if you want to find out more.
www.abovetopsecret.com...