Instruct: Classify a review into positive or negative sentiment.
Query: Sorely disappointed

For a start, the game is incredibly demanding on hardware, even if you turn down all the graphics settings. My computer's about a year old, and has good sound/video cards as well as up-to-date drivers, but the game keeps freezing whenever it gets busy.Secondly, with the 3D graphics it's really hard to tell the units apart, unless you zoom right in.Thirdly, your own units are incredibly stupid: They're magnetically attracted to the enemy's guns, even when you specifically select a safer route.And finally, everything happens so fast that you never get a chance to defend - either you've put up enough defences in the first place, or when the enemy attacks, it's all over in a few seconds.