not sure what fullscreen icon or menu bar youre talking about but im on windows and f11 doesnt work, i went ahead and played a bit and really enjoyed it
Yes, the cursor was intentionally hidden in this version.
I found it was just ugly to see, and I was pretty sure it was unnecessary: since you don't use the cursor to aim with the pad, I though it wouldn't make much difference to do the same with the mouse...
If you like, I will implement a feature in the next release (out in few hours, I guess) to show an optional cursor. :)