This is one of the greatest games I've played in a while. You really get the feeling as if you're being hunted, turning around to check for your hunters before turning around again to sprint away, being filled with paranoia and fear. This is when you turn the corner, and a raptor is staring you straight in the face. He then proceeds to remove your face with his teeth.
I just had a strong urge to fill up the entire map with buildings, so I did. I then became incredibly bored and starved my population, but survivors came faster than they died off. I played this for about 3 hours straight, nice job.
This game's turrets NEED priority targets. Rocket launchers should not target exploders, unless there is nothing else to target. You have no idea how many times I've been killed by swarms of motherships because of this.