Not only did it not try to be funny, but you even got some high psychodrama by the end of it. The movie for the "Self-Aware Colony" wonder will make you drop a brick the first time you see it, and ask yourself "Should I really be meddling in this?" You end up not liking Miriam at first--She's a total screwball fundie who starts wars and gets in the way of progress--but by the end of the game, she's one of the most sane leaders left.
In case you're wondering how I can talk about a plot in a Civ-style game... Every technological advance is accompanied by a little descriptive blurb. Nobody reads those. Instead, they read the flavor text: Sometimes it's a historical quote from one of the leaders' historical libraries (Santiago and her 'Art of War'), but usually it's from one of the leaders' memoirs. They're spoken by that leader's voice actor too. They have very compelling personalities and neuroses.
Here's some of my favorite creepy ones from late game (not to threadjack or anything...)
The first living thing to go through the device was a small white rat. I still have him, in fact. As you can see, the damage was not so great as they say. -Academician Prokhor Zakharov, "See How They Run"
I loved my chosen. How then to face the day when she left me? So I took from her body a single cell, perhaps to love her again. -Commissioner Pravin Lal, "Time of Bereavement"
My gift to industry is the genetically engineered worker, or Genejack. Specially designed for labor, the Genejack's muscles and nerves are ideal for his task, and the cerebral cortex has been atrophied so that he can desire nothing except to perform his duties. Tyranny, you say? How can you tyrannize someone who cannot feel pain? -Chairman Sheng-ji Yang, "Essays on Mind and Matter"
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http://en.wikiquote.org/wiki/Sid_Meier's_Alpha_Centauri )
Do yourself a favor. Play. :3 Getting the next tech has never been so compelling as when it gives you a little bit of the story, too. And unlike Civ 4, the different playstyles (evil dictator vs. economist vs. Planet freak) really do *feel* completely different. Playing a different faction is like playing a whole different game.