The greatest treat is the possibility to freely zoom in on the map. This feature is practically useless, but it definitely improves the overall impression. The perfect music and sound effects are the next best things. They make this game really a pleasurable experience. If you fell tense for some reason, you can just start this game and relax.
Computer is a worthy adversary.
It usually has a head start, so you won't stand a chance if you attack it at once. You can choose if you want to play on the easy or normal level. Still, they obviously named these levels of difficulty the way they did only to prevent you from giving it up just like that. There are a lot of missions, and it will take you quite some time to see the end sequence. This shouldn't discourage you, however.