The tech trees for Minor and Dread Lords get fixed too, I just forgot to mention it above.

Great.  I noticed the Dread Lords later, so glad I didn't have to mention it.

I think I have to give another thanks for this one.  I went through and removed the PD category from the Altarians, Terrans, Drath, and Korx, then autoran a test game out to 2233.  I was shocked.  I was amazed.  I saw something I've never before seen in all my Twilight experience - the Drath Legion had dominated the galaxy!  I mean, I've seen them militarize and attempt to defend themselves, but I don't recall ever seeing them explode and dominate the galaxy.

Of the eight minors, one had a little nine planet empire with a decent military and looked about ready to maybe conquer a Yor world.  Of course, it was dog-pile on the Yor at the time, but still that's pretty impressive.  The others were lesser and some were in the process of being conquered themselves.

For the Thalans, you just changed the <Computing ID>/<Defenses ID> to <Weapons ID>?  Did you change the category for Space Weapons from Pure Research to Military, or just leave it?

Well done.

This. 

I ran another test and the wars started breaking out early to mid 2228, which is pretty unusual in my games.  Even the minors were declaring war before too long.  I would now wager a small sum that the PD tag was stuck in there to keep the peaceful races more-or-less peaceful until the wars started breaking out.

I wonder if a good middle ground might be to designate it as shields rather than PD?  Missile tech is pretty uncommon, but lots of civs go for lasers.  Would maybe help keep the peace but give an earlier/better signal to start with the weapons.

Either way, makes for an interesting game.  Maybe it's time for me to actually hop into one of these test games.

I think you can just lower the AI Value for the tech to make them less interested. It was odd to see it mislabeled but with an AI Value of 120, which is far higher than any other tech.

There is a new value for trading now, called Willingness To Trade. AI Value is now just for what priority the AI places on the tech.

I tried to mod this myself.

I'm not sure if it actually worked, though. The Altarians have yet to research Space Weapons (it's early 2229) and the Terrans hadn't before I traded it to them for their economic treaty. I have yet to encounter the Thalans, Drath, or Korx. The minors haven't researched it either. However, I forgot to do the "quicksave fix" that's needed to make them non-stupid, so that may factor into it.

So far the only thing I've noticed different from a normal GalCiv game is that the Drengin have gone absolutely insane, colonizing 22 planets (more then anyone but the Terrans) and still churning out ships. There's many other aspects of the game modded and it almost certainly has nothing to do with the weapons fix. I just thought it was interesting to note.

I don't know what would cause a lack of colony ship production.  Those can be built from the start of the game, so changing the category of a few techs isn't going to mess with that.  You should check that the computer civs have their intelligence level set properly, a lack of it might cause them to twiddle their thumbs.

This is very interesting. Once I started looking at the tech trees, I saw many other techs that were in odd categories. For example, take a took at the Iconian tech tree--at least on my machine, many techs appeared mislabeled (e.g. Advanced Logistics is categorized as "Biological Warfare"!) Of course it's hard to know which of these are legitimate mistakes, and which were intended by the programmers as work-arounds for undesirable ai behaviors.

This is very interesting. It seems possible that strange tech categories may be responsible for many of Twilight's bugs, as well as the disappointing failures of some AIs to research their unique techs.

I think I'll have to download MarvinKosh's original mod though, as my attempts to replicate it have all failed.

Edit: The Iconian tech tree's categories are just bizarre. The organic hull research path is listed as "Colonization" and one mass driver tech is listed as "beam"! Other tech trees have wacky categories as well, though the Iconians are the worst.

Over the next few days I'm going to try editing all the tech trees so categories are more logical. We'll see what happens.

See what kind of a can you opened here, Marvin?  Now I'm going to have to go through and start playing with the categories.

This is linking in well with my personal experience, as I only recently began even looking at all the unique tech trees.  I had only played Terran and Yor extensively before.  Now I'm using Arcean and Torian, and I've actually gone and looked at the other trees.

Good work on the Korx, Deweyjohn. Those are pretty big techs for them to not use at all.  That'll be my next change.

Keep posting results!

So I finished up my first game with the mod.

It was a lot more fun than usual.  Everyone was hobbled by the galactic speed restriction event. The Terrans ended up owning about half the galaxy, but their military was only so awesome because of three military resources. Once I discovered all the military resources I sent my fleets to knock them out and build my own starbases on those resources.

In the end the Terrans lost because of their smug superiority.  Despite having a major advantage in research capacity, they had barely researched Laser IV when I launched my surprise attack, whereas I had already crammed some serious research in and got Pulse Cannons.  With the loss of their military resources, they could wear down my forces but not actually stop them.  They hung on for a while, researching all of the Particle Beam techs, but it did them no good because I had my ships fitted with shields in no time.

Compared with the unmodded games I had played before, it was much more challenging, even if the challenge went downhill a bit once I had control of the resources.

Continuing the examination of strange tech categories and AI behavior, I've just finished compiling a list of all the unique tech branches that get ignored by their respective AI. I left off the Drengin and Korath because the Drengin never do well (except in one ongoing game) and I don't play against the Korath often. I intend to see how many of these are categorized into strange categories:

• Altarians: Pretty much the entire Xeno Mysticism branch is ignored or left until late in the game. They also ignore the Temple/Shrine branch of morale improvements.
• Arceans: Weather Control techs and the Planetary Fortification branch leading to Cathedral of Valor.
• Drath: Weirdly, they tend to research most of the techs they share with the Altarians that the Altarians ignore. The only thing they seem to ignore is the Divergent Evolution branch.
• Iconians: Hoo, boy. They never research the "Advanced Weapons" techs that let them move beyond their unique weapons and into the second weapons tier. They never research "Expert Engineering" and so never get medium or larger hulls unless traded the techs. They're really slow to research their economy techs and they completely ignore the organic hull branch and the manufacturing branch that begins with Interstellar Refining.
• Korx: As mentioned above, they ignore their unique trade techs and Mercenaries.
• Krynn: The Krynn do tend to research the "Laws of Krynn" branch of their religious techs, but almost always ignore the "Interstellar Missionaries" and "Superior Espionage" branches.
• Terrans: The Terrans have a fairly mundane tech tree, so they don't really mess up with it. The one weird aspect is that they research Fleet Warp Bubbles but never actually build ships with them. That's another issue, though.
• Thalans: For such a unique tech tree the Thalans could be worse, but they do tend to ignore the various techs branching off Basic Gravitronics until late in the game.
• Torians: The Torians are good, but they can take an awful while to research their research techs. They also ignore Nano Materials, but that's probably because they get traded the techs it's a precursor to first.
• Yor: Stellar Streams is almost always ignored. I've also never seen them research the Manufacturing Vortex techs.

I intend to try and sort these into more logical categories. If it works, expect to see a report sometime soon.