Woot! ZV just got approved and landed in the Amazon App Store! It took some extra work to add support for Amazon's GameCircle stuff (in place of Google Play game services). Also apparently since a week ago or so Google Ads don't work on the Kindles so I needed to add Amazon's own ads. Still left to be done is implementing in app purchase with Amazon but that looks like a headache so I'm skipping that  for now. If there's enough people that play the game on Amazon then I'll go ahead and add it then. :)