I know people have already said this, but I think it's an important point that bears repeating. Nothing good will become of this if Ubi loses the case. OK, Ubisoft loses some money, big deal, plenty more where that came from, whatever. Trouble is, there are a LOT of small-time books out there that likely noone would ever had heard of, with stories vaguely similar to those in certain games, depending on how you spin it. Winning this case sets a precedence for other authors to sue on the grounds that they came up with an idea first, and have intellectual authority over it. Cue floodgates.
If there's any silver lining in that, it's that game writers will have to really work their imagination to the limits to think of something truly unique, but it would still be a sad state of affairs.