1.) Go to the google play store on the web and choose a free app (it only works with free apps)
2.) copy the URL and paste it in the search bar of the following website:
3.) click generate download link.
4.) choose which app you want to download the apk with.
5.) then click open file, and then hit install.
6.) Play the game!
I use this trick to download stuff that isn't on the Amazon market but is free, like the Buzz launcher and other games. I hope this helped someone, and thanks.
I think most of the xda users will know how to do similar things, but maybe there is a new guy out there who doesn't. like me half a year ago!