Today's Free App of the Day is Cubimania
Originally $0.99

A matching game with a cube that you must turn and remove pieces. The reviews aren't great--citing the controls and the colors and the lack of documentation. You can see above that the two shades of yellow are very close--this is one of the major complaints.

23 of 51 reviews are four stars and above.

So we have a bonus pick: Classic Words Free.

Yet another Scrabble variation. This one allows you to play against the device. Great if you want a game that goes quickly, without waiting for a live opponent to play. Also, good for getting back in the game if it's been a long time since you played Scrabble. The game comes with "no rare words" for the computer and "no bad draws" for you turned on by default, so that gives you a bit of an advantage. In normal mode, I was beating my Fire rather handily with those turned on.

The device doesn't seem to target the high score squares first, the way a live player would; perhaps this will happen when I try the harder levels. Levels above "Normal" are "Hard," "Very Hard," and "Extremely Hard." Levels below Normal are Easy and Very Easy. You are given stats at the end of the game with your average points per word and highest word and more. There's also a paid version ($3.99) of this game; I think that version has "Pass to Play." 132 of 148 reviews are four stars and above.

These apps are compatible with the original Fire and with my Fire HD 8.9" 4G. 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.

Have fun!

Also check out the other digital deals from Amazon, including great deals on MP3s and videos: