The Room is now part of Amazon's Underground. I think it is Kindle/Fire tablet only still.
This version seems to be multi-device. At least, it doesn't say anything about it being the special kindle/fire version, and the permissions include "Allows verification of Google app Entitlements".
The 99 cent "kindle Tablet Edition" is still on the store (instead of being replaced by the underground version like a lot of other apps have been when they get added to underground) and has different permissions.