Cube World
I saved the game and checked if anyone is open to sharing a private message with me.
Lol
You can create your own account using an email address and then start playing right away.
You can't register any longer.
In Cubeworld, you don’t sign up to create an account. It’s a bit confusing, but I’m sure you’ll get the details.
The developers ceased production of the game and removed the registration page. Users were directed to picorama to sign up.