Why have the markers create necromorphs if you then need that species to recreate markers and summon the brethren moons? Aren't necromorphs just a massive threat to the individuals of that species smart enough to build markers? Why do the brethren moons rely on a species that has individuals smart enough to recreate the markers and propagate them around? Isn't that already asking for a lot considering that species would be a highly intelligent space-faring civilization, which limits opportunity and increases risk. How did the brethren moons come to be if they rely on the subjugation of alien biomass to reproduce? Was there an original brethren moon? Where did that come from? Then 3 hamfisted in a non-sensical corporeal 'big bad' alien species that felt like a direct rip off of Mass Effect's reapers (Mass Effect 3 had came out the year before). It's feels hinted throughout the first and second games that the markers are the result of extradimensional lovecraftian -ery, what with the induced madness, mind manipulation and cults. Brethren moons are -ing stupid and here's why.

Brethren moon from dead space