I can't play it because the crouch and aim keys are not working consistently. They do a various delay response. I use right control for crouch and numpad1 for aim. Page down for the scanner toggle works perfectly fine. So until a patch is released I cannot play what I paid for you have 30 days then lawyers get involved. Thankfully the offline 163 version is available for down load and I did get that installed and the keys are fine in it. I have both version installed!
