[DataPacRat]

The Forerunners were around TL10, and left behind a lot of goodies for the various up-and-coming TL0 species. Manna, residential trees, pharm plants offering just about every drug in BioTech or UltraTech, microbe colonies producing shiny bugstones, and more.

I'm currently eyeing the pages in Biotech that allow for a Proteus Virus that's a Genetic Surgery Nanovirus offering the Mutation Repair genetic surgery, with the options Plague and Species-Crossing; sure, it would have cost somebody $5M to initially create, but once it's started spreading, any critter or person who gets infected will, after 4 days, be reset to the prime age of youthful maturity.

This is the sort of thing that can have /consequences/ for a setting, whatever TL the current crop of locals might have. Assuming that it's some number of thousands of years since the Forerunners went away, and that the local ecologies haven't crashed in the meantime, what sorts of Proteus Plagues are likely to still be kicking around, in one reservoir or another?