So, exactly how much does the game change depending on your choices? Because my version differed vastly from the Game Guide included with the download. Namely, the section directly after Flotsam.

Have yet to finish the game (collecting items to lift the curse at the moment) so no spoilers please! It'd just be nice to know which decisions have the biggest impact on the narrative.

Yeah there is quite a few game altering choices to be made through out the whole game, I noticed that a few times too where the game guide would be way off!

Differed vastly from the Game Guide? Even including both major paths stated for Act 2?

Iorveth's and Roche's paths can be VERY different... but are you saying your play through was different even including both of them? I can't give details, only basing this on the brief skim though of the game guide and from what I read in the forums. Dun want to spoil it for my second complete play through yet! =)

Haven't completed it once yet! Just got really, really confused when the guide didn't jump straight into Henselt's camp in Act 2 and was wondering what caused that.

Totally replaying again once I'm done and siding with Ioverth this time as I was genuinely torn before as to who to pick and had no idea it would have such a profound effect on the game!

Can't believe people are claiming it's short considering the fact that multiple playthroughs are basically a necessity!