So I'm browsing on the net and I come across a little freeware gem. It's called Counter-Strike 2D, and instead of a first person view, you play from a top-down perspective, like the original Grand Theft Auto. You can play on the net, or with bots that have 4 different difficulties. There is a fog of war that can be turned off. All of the CS maps are faithfully recreated using tiles. You can get it at http://www.cs2d.com/download.php.