Training your brain is nice and all, but its a wonder that the Nintendo DS doesnt receive more real-time strategy games. Making ample use of the touch screen could be the most optimal way to corral and deploy sentries this side of a mouse and keyboard. And for the most part, Steel Horizon puts it to good use, allowing you to traverse entire oceans as easily as youd pick your nose. Selecting which aircraft carrier, submarine, destroyer, etc., is a breeze thanks to your trusty stylus and touch ...