As far as PacManPolarBear can tell, the only people who have been actively playing Etherium are reviewers.
Etherium – Launch Trailer
Etherium is a real-time strategy game from Tindalos Interactive and Focus Home Interactive, launching today on Steam for PC. The name of the game refers to the rare resource that three warring factions are battling for control over. Each with strengths and tactics of their own, you must choose a side and battle for supremacy.