I don't know how I stumbled upon it, but it's basically a game that was similar to Worlds, but it's dead now and has been for a while. The website is still up, and gameplay is featured on the website, as presented by Vinesauce Vinny. It was my first exposure to a game like this, and I didn't know it until recently but the game is definitely inspired by Worlds.

Here's the link to the game's website

I recall getting on this when nobody was online a few years ago with some other Worlds.com peeps. Didn't think much of it though. Was definitely weird.
Also Worlds.com is not a game.