There is some camera issues in this demo. Because when i start playing after short cutscene, the camera starts to rotate without end and i can't stop it, I tried out every key and still nothing.

Rotation... that's typically the result of a controller still being plugged in, even if not used. Do you have one?

You were, when i unplugged the controller and the camera didn't rotate, thanks.

This is what i hate about some modern games. I have THROTTLE, not gamepad! Why do i need to unplug it or disable? In games with normal input the game does not use my joysticks, until i want it too. And Dreamfall (which uses same engine, as System Shock) has no such issues, Doom does not have this issue, Witcher series does not have it. But some studios just continue doing the same error again and again: Dead Space had this issue, Dead Space 3 still had it years later.

I'm a little tired of it. Why can't everyone just do normal input?

I have the same issue, but even by disabling and/or unplugging the controller it still rotates.

Both use later versions of Unity. What's wrong?

Probably an extension of the rather insane naming scheme. Old System Shock is not related to old Dreamfall, but the new ones likely are. Can be confusing for the old. :)
(See also: The new Doom.)