I just wanted to give a little feedback, because there were some things I had some issues with.
Firstly there should be an option for using the Data of the normal Opera Browser, having everything two times is a bit of a waste. Secondly being able to close the Game Tab, or at least limit it to 1 instance of it. Every time when I move a tab somewhere else it opens another one of it, also putting itself on the front. (Sorry for that weird explaination, just try to drag a tab and you will notice it.
On the GX Corner there is also a feedback button, sadly it's very limited, that's why I am writing this here.
I really like the design, I hope we will see more soon.