Can someone explain to me why there is that symbol next to the YouTube logo?

New Teaser

A little preview of half the office.

New teaser (it took me a while to post the teaser because the internet is horrible)

New teaser of these two characters

???

New Teaser.

I found this playing

A little about the gameplay (I'm starting to program that character you see on the screen)

It's incredibly hot, we are under a yellow warning and at almost 40 degrees I hope it doesn't reach 50 degrees like a while ago.