Just when I thought that this couldn't be even more blatant of a Xenogears ripoff, they throw in their version of the song of Nephilim. A more accurate title would be Xenostar Galactica.
Lets take a look at some of the similarities with Xenogears episode 1/Xenosaga
Fleet of ships seeking the lost planet Earth (which is where the similarities end with Xenogears episode 1 and original Battlestar Galactica); within the colonies of humans which have developed around the galaxy they developed artificial intelligent robot. This advanced further to Realian life, biological lifeforms created (Xenogears/Saga explain this by nanotech, but Battlestar Galactica hasn't explained how the humanoid cylons were created). The religion of the one god. The realians/humanoid cylons are activated using a song (song of Nephilim, and all long the watchtower in Battlestar Galactica). Xenogears and Xenosaga both have many people who consider Realians to be unimportant, tools to be used - or highly dangerous; and so does Battlestar Galactica in the later seasons. That's only part of it.
The major difference so far is that in Xenogears, the ancestors of Earth were realian; engineered to be the building blocks of Deus/God. This with the exception of the human genetic -Fei- who was mistakenly introduced at the beginning of time, effectively contaminating the genetic integrity of the realians (except for the pure blooded Solarians). Battlestar Galactica, Earth is human colonists.
Still, there's more Xenogears and Xenosaga in Battlestar Galactica than there is old series Battlestar Galactica. While these themes have been explored in other Sci-fi, not in this package. It is highly improbable that it is a coincidence that the re-imagined Battlestar Galactica came out just a few years after Xenogears and Xenosaga, being the only other Sci-Fi story with this package, and NOT have been influenced in any way.
I don't mean to sound critical of the series; I actually REALLY like it - think it's the best thing I have seen in a long time. What I don't like is that no where have I seen any credit given where it is due (in this case, a videogame series, one which is among my favourites); not even a mention of Xenogears, or anyone involved in the project. I would guess someone on the creative staff was a huge Xenogears fan, and is passing off the new Xenoseries elements in Battlestar Galactica as their own work. Perhaps they don't see the importance of crediting the authors of videogame stories. Even authors who write fantasy always, for the most part, thank Tolkien, Lewis, and other authors (there is even praise from Robert Jordan toward Guy Gavriel Kay's Fionavar Tapestry, which Wheel of Time is very similar to - Kay himself a friend of Christopher Tolkien).
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