Another reviewer already said it, but I'm saying it, too: This game will change your life.
Let's start by examining the game box. It's straightforward, yet it has a secret double meaning, too -- that all the world against Russia at the time had gone against fellow men. It's clear to me that the artists were trying to convey Stalin's side of WWII as a way of telling mankind that war accomplishes nothing, and that it only makes one or more people 'alien' to the rest of the world.
On a side note, putting a picture of the game box anywhere on your T-Shirt causes a few things to happen to you. Namely, it causes the shirt to fit any frame, regardless of how girthy said frame may be, it has Stalin and an alien on it, and wearing the "Stalin VS Aliens" T-Shirt causes you to become a girl magnet. I walked into a grocery store and met three ladies over the course of 90.01337 seconds. The only negative things I can think of?
1: Not enough Stalin, and not enough generic aliens.
2: You can't see the picture with your arms crossed.
3: It would've been better if Stalin had glowed in the dark.
Just by wearing the game box, you can tell that the game itself is going to be awesome. I can't possibly name every way it's incredibly flawless; to sum it up, however...
All characters can swim through solid concrete -- something not even Chuck Norris himself can accomplish -- and the game lasts so long that you'll die before you finish it. I'd know -- I died before finishing it, too!