C&C features a bunch of fun cutscenes and tough missions set in either Europe or Africa, depending on which side you choose to play: the cultish Brotherhood of NOD or the NATO-ish Global Defense Initiative (GDI). While there is not a huge variety of units and structures, the game is relatively well-balanced and is a riot and a challenge.
Perhaps the best thing about C&C is it is now free to download. Get it here or here. To borrow a line from young/old Indy, C&C belongs in a museum. Not only that, but it belongs on your computer, as well.
Good times, right? I remember playing through this on both sides then waiting for the sequels. Each time a new C&C game came out, it demanded my attention. How about you? Sound off in the comments!