I was hoping they'd call it Two Worlds: The 40th Day.
It worked for Army of Two Two.
Did they seriously not cover the "Two Worlds" bit? I've never played the full games. The first because the demo was bad and it was poorly reviewed. The second because I was pretty sure if it had any quality to it they probably wouldn't have attached the "Two Worlds" franchise to it.
Not that it's inherrently bad, but there's a purpose to sequels, and since it's only vaguely related to the first at best, the other option is they wanted to create association by franchise. And while you can get some good franchises that way (GTA, for example), when the first game is bad it makes the title a deterrent. you probably wouldn't name your innovative new retelling of Shakespeare's "Romeo and Juliet" "Springtime for Hitler 2."
Also, one of the things that amuses me most about the "sidetracked by sidequests" deal is how readily your character will go along with them in most games. It's one thing if they're tangentially related, but once you're doing a favour for the local peasant whose friend asked you to help so she would offer you the key you need to use to get into the dungeon where the mayor's son is locked up, so you can rescue the son and get the mayor to give you the golden flute of okanon, which will free the fairy spirit who will tell you how to find her long lost lover, the only person who has ever successfully cast the grand spell "Deus Ex Machina" so you can bypass the defenses of the enchanted castle, rescue the princess, so her father will offer to help you in battle against the great king of Slightlyevilopolis, it starts to get a little silly.