Available on Steam around 850mb download.
A shooter set across different time zones (apparently) the demo puts you in
the middle of the American Civil war.
After about 10 minutes of so so fighting - which isn't as good as the HL2
mod set in the same era - you are then given a machine gun which you are
supposed to use to even up the numbers. It's rubbish and one of the rifles
you swap it for is nearly as effective. The weapons feel "flat" and the
graphics are below average Source fare.
As far as I can see there is no way of a user saving location so there seems
to be an autosave thing going on.
Overall, ymmv but I won't be buying it - or replaying the demo.