Command and Conquer Red alert is like the first Command and Conquer except there is better gameplay the graphics are better and you get more units and structures. I like the levels where you are inside compound which is also the most major difference between the two. Aftermath and Counterstrike have good add on missions so if you get bored you can put in one of them in your cd-rom. I think you should buy Red Alert but also get Counterstrike and Aftermath becasue also lot's of fun. You can get a special box at Game that has Red ALert, Aftermath and Counterstrike.