Their game is getting 12-13k downloads per day and has made best-of lists on Mashable and MSNBC; clearly they are well known, even if you are not personally aware of them.
I'm pretty sure the point (which was not quite adeptly-made) is that calling Spacetime a "well-known game developer" is overselling the company by a bit.
I'd never heard of them before either. They're clearly doing a great job in the mobile space, but when I read "well-known game developer", I think of companies a few orders of magnitude larger than Spacetime.
For a company with wider brand recognition - whether it's Rovio (Angry Birds) or Blizzard or Harmonix (Rock Band) or whomever to do better on Android than iOS, that'd signal something a bit larger. Which is what I was expecting this article to be about.
Their game is getting 12-13k downloads per day and has made best-of lists on Mashable and MSNBC; clearly they are well known, even if you are not personally aware of them.