Today's Free App of the Day is Eights
This is a pleasant enough game (though I recommend playing with the sound turned down). It's a variation of a game I have on my iPad called 2048, and also, apparently, according to the reviewers, a game called Threes! You have a 4x4 grid; you slide tiles, combining 5+3 into 8s and multiples of 8 (8+8, 16+16, 32+32, etc.)
14 of 25 reviews are four stars and above.
These apps are compatible with the original Fire and with my Fire HDXs. To tell if an app works for your Fire HD or other Android device registered to your Amazon account, click on the above link and look on the right side of the web page. Amazon will tell you if it will work with your registered device.
Also check out the other digital deals from Amazon, including great deals on MP3s and videos: