I just(As in a few minutes ago) beat game 5 for the second time, and have beaten all the games in the set twice(3 I've beaten 3 times, once for shaper, then for rebel, and then with Alwin and Shaper, didn't get him or Greta the first time as they were rather....limited compared to my preferred squad of Vlish, might replay one last time to get Greta and Rebel end)
As stated by some above, I find the games rather disappointing in what does and does not affect the story. As a prime example, in game 3, the second island has a rebellion going on completely separate from the main one. This rebellion is because the people don't think the local shaper lord is doing enough to help them against the rogues, and the rebellion's leader has been contacted by Latallia and offered resources. When you point out that the rogues are something little Miss Double Talk made to the leader of the local rebellion, he basically says it doesn't matter, and there is no option to tell anyone else in the rebellion or anywhere on the island what happened and why.
Still, putting aside some limits, which I will allow given the small team that made this, I find the story, the characters, and the setting very much interesting. The gameplay suffers a bit, but is still better than many of it's contemporaries, including the other Spiderweb games(Bought the other saga, that A word I can't remember, and am finding them lacking in almost all respects compared to geneforge)
Oh, and 4 and 5 are quite different, in both tone, graphics, and everything else. Mostly because instead of you being special because you're the only one there to help, in those games the reason you're special is more nebulous, and in 4 it gets patently ridiculous in the Fen's area where both sides basically say you can't leave until the local threat is dealt with(Though at least the shapers claim this is only a resource saving measure, if you die they're out one spy, as opposed to the forces it would take otherwise.