Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Strategy Game

The fourth installment of this great series has a number of changes and improvements over previous versions. Of course the basic concepts remain the same. I'm not going to repeat a lot of what's already been said about this game but I will say that if you are 1)interested in really good strategy games which require a lot of thought and planning, 2) aren't obsessed with the latest and greatest graphics, 3)have a reasonably long attention span then you should give Civ IV a try.