Stumped by this a couple of days ago because it was mentioned on STEAM News or something. The first comment from my girlfriend was "Hah, that's a Portal ripoff - companion
ball, eh?".
Still, there's quite different elements in it compared to Portal, and it looks like it might be interesting. A bit too little information in the videos (there's mostly just some combat action, I'd like to see a bit more of the puzzle elements and what you can do with the ball), but it does seem like something that might be worth checking out