Bottom Line Up Front: I'd like to play on my Kindle so I don't have to spend money on getting a new device (and possibly buy some in-game lunchboxes as well to support Bethesda).
I'm not sure if this is explored in any other thread but I haven't been able to find any information on Bethesda's plans for the Kindle Fire. I've read that there is a side loader for Google Play for the Kindle but also that Fallout Shelter has been coded to be prevented from being used like that so at the moment all Kindle users have to just watch YouTube and sob uncontrollably at the despair of not being able to play, or shovel out large sums of money for another device so they can play. Blue Stack for PC is also another option but bogging down your PC with a 'middle-man' program just to enjoy Fallout Shelter seems silly (plus it requires you to install other games to keep using it as a free service).
Again, I'd like to support Bethesda for making such a fantastic mobile game but if I need to spend money on a new device just to play (money I don't have) then that would really be a bummer. I'm pretty sure others share my sentiment.
Cheers!