Today's Free App of the Day is Bloons TD 5
This is a mostly well reviewed tower defense game apparently involving monkeys and balloon popping. ;D The good news is that game play is generally acknowledged to be quite good; the bad news is that there are significant spyware concerns and installed file size is on the large side.
994 of 1128 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: