Awesome, thank you!
I know the borders can seem a little dissapointing, but it's actually to help correct the aspect ratio. This is a technique used in most modern games and helps prevent the view from appearing stretched.
Examples :
Call of Duty
Halo
And the physics, or rather the lack of them, was also a design choice as you were unable to fall from heights in Goldeneye.
Rest assured though, my next demo will not only allow you to fall off of things but also jump over them!
Anyway, thanks for the feedback. It's much appreciated and I hope you and your friends have fun with this.