Creatures Caves

TWBs have everything that the latest versions of CFF have afaik, they are basically an extension of CFF 1.1 I believe, with all their fixes, though Dragoler could correct me on this... The only thing I might think of as a downside of TWB vs CFF is that they are less genetically compatible to breed with other types, because to get their nutritional and body heat systems working, they have additional fairly extensive metabolic changes that are intertwined and dependent on other changes spread out around their genome.

If you do go with non-TWB CFFs, silencing those 2 genes will also work... in that case you might also want to set them to not mutate, so they can't switch back on. As for Chemical 130, it was an experiment based on some functionality I saw in the SV rules of normal brains, and decided to expand on... (long-windedness ahead, read only if really interested, lol...):

See, Creatures have a slight random factor in what they decide to look at and think about doing... Basically, each possible action and object have neurons in the noun and verb lobes that are stimulated based on the actions it wants to do and things it sees (based on instincts, learned associations, drives, words it hears, and how stimulating objects are), and then the decision and attention lobes pick the verb and noun neurons that are most stimulated to decide its action and what it pays attention to... BUT, if you look at the SV update rules for the verb and noun lobes, you will see that a random factor is added to each neuron first... This random factor won't override anything they REALLY want to do, like eating food if they are starving, see food nearby, and know it will help; it just kind of gives a nudge when they are not sure what to do, making them decide to try new things and pick between actions in a more 'lifelike' way.

CFF 1.1+ (and the 1.0 Evos, and I believe all the TWB breeds) have this random factor increased, so they act a little more randomly, try new things more, etc... C3 norns were still fairly robotic, the random factor is pretty tiny, it seems less than other games, or maybe the learning in C3 brains is just so much better that they really know what they want more of the time... With this change, they still learn quite well, but they do act a little more like Creatures from earlier games... You may have to watch them more around dangerous things like deadly weeds or beasts, detritus, things like that, at least until they learn better.

As an experiment, when I made those verb and noun changes, I copied the random factor rules the verb and noun lobes already had, and added them to the tracts coming from the vision lobes. I set the strength multiplier for this additional random factor to be the amount of chemical 130 in them instead of a constant... So, when no chemical is in them, this random additional factor to their vision is suppressed and the vision lobe acts normally... When the chemical is there, they still see what's around them, but they have additional randomized levels of stimulation to the neurons representing every kind of object that could be in their vision, so they're also seeing all kinds of objects moving around at random varying distances... The higher the dose, the more the effect, and the more the phantom objects will whizz around, and the closer and more visually stimulating they can seem, drawing their attention or even making them obsess over one of these objects.