RoachQuake: The BFG Turns Opponents into Roaches! — Quake 2 Mod, by David M. Pochron

"After the fall of Shub-Niggurath, the world which was the home of the Elder God Shrine was forgotten and fell into disrepair. Several hundred years later, as man expanded out into the deepest reaches of space, several mining expeditions came across this world and found the ruins of the former shrine. All layed claim to the artifacts at this site, and now battle amongst themselves to see who will get to uncover the secrets of the Elder God Ruins."