For the past 2 years, I've been interested in learning more about the cancelled Piranha Bytes-made addon for Gothic 3. This ended up being a much longer write-up than I imagined, but I hope you at least find it interesting. Let me start off by explaining what this is all about.
Backstory
Gothic 3 was released on the 13th of October 2006 in a "less than optimal" state. After 4 additional patches were released (1.07, 1.08, 1.09, 1.12), the game was left in a somewhat playable state, and questions started to be asked about what will happen next.
The answer to this question is eventually hinted at in a
Christmas interview with Kai Rosenkranz (conducted on the 24th of December 2006), that mentions at least 4 different things that should happen next:

Zitat von
Google Translated KaiRo
Now we are faced with the following problem: Our time is taken up by four "projects": The completion of Gothic 3, the work on the editor, the planning of future projects and the restructuring of the company itself if you would like that

), we have to tackle the work that has to be done sorted by priorities. And the top priority is still the completion of Gothic 3.
In order to finish Gothic 3, PB would release a large, so-called "gigabyte" patch, that was to fix up any remaining issues with the game. Along with this, PB wanted to release modding tools for G3 and also start making their next game. At this time rumours spread that the next game would in fact be a Gothic 3 addon, as was
teased by JoWood prior to Gothic 3's release. However, these rumours end up being neither confirmed or denied by Piranha Bytes.

Zitat von
Translated Björn
Gothicz.net Everybody would like to know what you are planning next, and I don't mean further patches.
Björn Pankratz: It's not yet certain. However, it will have something to do with our Gothic world, that IS certain.
As months go by, the lack of any new info about what PB is currently doing makes the community nervous, worrying that the gigabyte patch might have been cancelled. To quench the community's thirst for new content, Kai Rosenkranz makes a post on the JoWood message boards in March 2007, ensuring the fans that the patch is indeed coming, but they are facing technical challenges.

Zitat von
Google Translated KaiRo
And now to finish: The patch is not out yet because we have great difficulties with it in the most diverse areas. The more manageable key questions include: Can the patch installation be followed by a forced restart, x months after the game was released? How do you get a GB patch to the users? Will it be interpreted as a purchase patch for us if we include the patch with our next title, among other things? But some problems are even more complex than that. Since most people now report that they can play smoothly and without problems, we are not (again) putting ourselves under too much pressure, but are working on a well thought-out solution.
However, less than 2 months after this post was made, on May 22nd 2007, Piranha Bytes announces that it's parting their ways with JoWood. As you might know, neither the modding tools, gigabyte patch or the addon ever came out. PB eventually signed a contract with Deep Silver, and released Risen over 2 years later.
Investigation
What happened to the Gothic 3 Addon? Of course, it was cancelled, however, I am surprised that we didn't see bits and pieces of it being reused somewhere.
The time between the release of the last Gothic 3 patch and the end of partnership with JoWood was exactly 5 months and 1 day. For reference that's roughly the development time of Gothic: Sequel.
It's hard to imagine that during all this time, PB had done nothing in regards to their future titles, especially since game sequels usually start being planned and/or developed shortly before the last title is released. Of course, a lot of this time was dedicated to patching the Genome engine, but still...
With this in mind, I started scouring the internet for clues...
Forum posts

Zitat von
Google Translated Mike
We have been planning our new game for several months. This game currently exists. only in our heads and formed the basis of our negotiations about Gothic 4, which were finally ended by the publisher.
Together with this game, a change in the content of Gothic III in the areas of combat system, balancing and story / dialogs was planned. In our opinion, this "return to old virtues" would not have been possible with the technology of our last title.
So in the last few months we have set the course for this new game on our own account (and in some cases waiving our salary), on the basis of which we would have wanted to make the content changes of Gothic 3.
Unfortunately, PB and JoWood were separated.
Our former publisher has already announced in the press that the only important thing about Gothic is Gothic, and that the developer is replaceable.
We wish our former publisher all the best with his new projects.
Even with the shoddy translation, it is possible to read between the lines to see what is going on. The new game mentioned here most likely ended up being Risen, but up to this point, it was meant to be Gothic 4. However, it's strange the it mentions Gothic 4 and not the Addon. Makes me wonder what PB was actually planning? Gothic 4? Gothic 3 Addon? Or both?
Remnants inside Risen
My first thought was to datamine Risen if I could find any remnants of these projects. I searched through all the textures, models, animations, shader files, etc. and even through the executable, only to find out how clean it was.
Well, when I say at first glance, what might be so special about them?
When you take a look at the normal map for these textures, you find that they were last modified on the 17th of November 2006. That's a more than a month before PB released the last Gothic 3 patch. At this time, PB was still under contract with JoWood.
Then there's an armor texture called "Ani_Hero_Armor_Mage_Water_01_Diffuse_S1".
[Bild: lVes5US.png]
Water mages? In Risen? Hold on.
Anyway, all of this means that PB were actually doing something during that time, and what they were making didn't exist "only in their heads".
The only other thing I found is that Gnomes are referred to as "Goblins" by the game, and there is an unused enum value for Lurkers (gESpecies_Lurker).
Cut Intro
I should also briefly mention the original Intro planned for Risen, which can be found on Ralf Marczinczik's blog.
For some this might be the smoking gun that the Gothic 3 Addon/Gothic 4 is actually Risen, however I am not so sure. This wouldn't be the last time PB made a reference to the Gothic series in a Risen game. A later Risen 2 preview mentions that Captain
Gregorius Emanuel Steelbeard used to hang around a certain "Khorini" island back in the day (sounds familiar?

). This could have been just that, a reference.
Interestingly enough, the textures for the people in this intro are still in the game files and I've uploaded them to Imgur if you want to take look for yourself.
btw: I keep thinking more and more that Eldric from Risen was originally meant to be Xardas or the Nameless hero. He kind of looks like the Nameless if you squint hard enough

Visit to the PB offices
After the release Gothic 3, a few lucky souls from WoG got the opportunity to visit PB in Essen, while being allowed to talk to the devs and take pictures. Of course the contents of these pictures had to be blurred out for obvious reasons, but there are still some things that have managed to "seap through the cracks".
When you take this into consideration in combination with the interviews... well, I'll let you connect the dots.
The work rooms are decorated with a wide variety of images and artworks, starting with images from Gothic 1 such as the cardboard display with Gorn, to a wall with top secret things, which are intended as food for thought and suggestions for the add-on. Unfortunately, we weren't allowed to take any pictures of this wall, although the piranhas were otherwise very open about photos.
Of course, it was mainly the time problem again, because we didn't have enough time to do these animations. Actually, a swordsman should do it properly, so that it looks good, that is, we should have brought in an extra guy who can really do sword fighting, who has to know how to tackle the MoCap. It would have taken two or three days to prepare the things. There just wasn't enough time for. Of course, it may well be that, if we have a little time, we will put something in the add-on because it created atmosphere.
...
That has not yet been decided, it is a matter of negotiation that is still a bit in the future. If JoWooD wants that, we want it, it makes sense. There will almost certainly be an add-on. The contract has not yet been signed, but it is almost certain. It is not improbable.
Lastly, among the pictures, you can see an unblurred photo of Thorsten Kalka's monitor.
[Bild: Q3oi7rj.jpg]
You can see him working on an unknown piece of armor. Maybe it's the same armor as in the unused textures?
[Bild: WslDr92.png]
Concept art
While reviewing all the info I found, I ended up going through Ralf's blog once again, to see if I missed anything. Turns out, I did.
In the Risen gallery on comixfactory.de, you can find a concept art of the bath from Risen 1, with the text "G3Add0n" above it.
[Bild: 61Zk3aP.jpg]
This is almost a direct conformation that the Gothic 3 addon was a real thing at one point, and that things from it were repurposed for Risen 1.
However, that's where the clues end. Interestingly, in the same gallery, you can find a concept art from 2005. What is it doing in the Risen section? No idea, maybe it's just a mistake.
Conclusion
Everything I found so far makes me more even less certain about the subject. It is almost certain that Gothic 3 Add0n/Gothic 4 and Risen are related in some way, but I am not sure how much exactly.
The sentence "Will it be interpreted as a purchase patch for us if we include the patch with our next title, among other things?" from Kai's forum post makes me thing that the Gothic 3 Addon would have been an expansion (similar to NoTR), in which's case it could have not become a standalone game that easily.
My current guess is that whatever the Gothic 3 Addon was, most of it was scrapped and only pieces that could be reused were reused in Risen, similar as with Gothic: Sequel (a texture here, an animation there...). It's an interesting piece of PB history nonetheless

Either way it makes me sad that we never got to see the game and that many hours of work went down the drain.
I hope that this at least sheds some light on it. Oh yeah and I nearly forgot... it's a bit late but... HAPPY BIRTHDAY GOTHIC 3!