Its Grand Theft Auto with Aleins!
As always I'll start with the good side of the game. This game had a great storyline! Now this game had a good storyline for you to follow and have fun with at the same time. Some well put humor in the game also let you have a laugh or two while you kicked some ass. Also, if you watched Invader Zim, you would notice he has a voice in this game. Reprising his alien roll and he does a great job with it. Now, this game has some cool missions, but the best part is after the missions you get to go into sandbox mode. Which means that you get to destroy you know "All Humans!" There is also some neat add ons like eating brains, and blowing up cows. But I don't want to give it all away.
Now the bad parts. There aren't many but there are a few. One would be NO CO-OP! What were they thinking! A wonderful game like this without multiplayer! Also, the levels seam a little too boxed in if you know what I mean.
Other then that this game is one great game! Go buy it now!