So I was looking around the forum, and I've found "What if" contest. I've wanted to give it a try, but honestly I have no idea how to participate. Is it still a thing?

The contest is still on. To participate you just need to make a meme of the weekly theme which you can see on the website (this week it's technology) and post the meme on twitter or facebook with the tag #WhatIfHumankind. The theme should still be up till next wednesday when they announce the winners and a new theme.

Oh, I get it now! Thank you!