>>715055954
>every black goo is the same
>every alien reacts to black goo the same
There's two ideas:
One is super-fertilizer that makes evolutionary biology go into hyper-competitive overdrive. New predatory life forms sprout out of all infected flesh and it eventually relaxes over generations of the new life. The engineers or whoever is manufacturing the goo can tweak the "fertilizer" to reform the fauna in their own designs.
Second is that it works as a planetary cleanser, working the same as a fertilizer except it never relaxes, the mutated fauna just eats itself out and the eco-system collapses.