The Alien Invasion expansion pack for Anarchy Online adds what seems like a lot of intriguing new content, but in practice, it's mostly for advanced players who have already spent lots of time with the original game. Yes, Anarchy Online is a massively multiplayer online role-playing game, which means that you create a character and then go off on adventures in search of better weapons, better armor, and advancement for your character by gaining experience levels. And, yes, Anarchy Online takes place in a persistent online world inhabited by thousands of other players. But unlike other such games, this one takes place in a futuristic world that consists of both hardcore science fiction and Star Wars-like mysticism. And the new expansion does add all-new features to the game in the form of player cities and armies of invading aliens that can attack those cities. But since player cities are hugely expensive, and because these attacks scale with character strength, you won't be able to get much out of these features if you're not already a veteran.