I still have a hard copy of Marine Shrapshooter 3, which I really enjoyed playing when it was first released about 10 years ago, so was looking firwards to buying this on Steam as I never did get a hard copy of the second game. It's a little dated graphically by todays standards, being around 10 years old, but what really spoils the game for me considering it's a sniper game, I couldn't see any cross hairs through the scope. Checking you tube videos of the same mission i was playing, it clearly shows cross haris, so whether the Steam version has a bug or whether it's my own computer that's the culprit, i cannot say at this time. I do update my drivers regularily and I've got loads of graphics RAM (6GB) All I get when using the sniper scope, is a distance indicator. When trying to snipe OpFor it's almost impossible to hit them.
I've played loads of dedicated sniper games as well as games with sniper rifles and have never had a problem hitting my target, whether it's a basic FPS game with no real bullet physics or a game like ArmA II or 3 where you have to take account of bullet drop. In Marine Sharpshooter II, the only way I was able to kill an OpFor was to stick the barrel in his faces at less than 10 feet.
If this is a global problem on Steam, I cannot recommend the game.
If i'm able to fix the cross hairs problem, i will re write this review. You can see a You Tube video of what the game should look like HERE