Today's Free App of the Day is MechCom - 3D RTS
Originally $1.00

This is a "real-time strategy" game. You have to manage your resources as you build your colony. I haven't played it yet. It has very mixed reviews. Also, there is a screen orientation issue that may or may not have been solved--I'd suggest locking the screen if you have this problem. From the product page: It is the year 2100 and Earth is rapidly running out of resources. In response to the resource crisis, the two most powerful corporations, BIOSPHERE and APEX, set off to lead a space expedition. To their amazement they discovered extensive resources on a strange planet far off of even the largest star maps. It contained precious exotic minerals whose energy levels were off the chart. This was earths answer. BIOSPHERE immediately started mining in anticipation of the prosperity and promise that the minerals could have for Earth. However, APEX saw the minerals as a highly lucrative business opportunity and promptly declared ownership of the planet and its vast resources. They ruthlessly engaged BIOSPHERE's forces intent on wiping them out. Only one corporation will make it back to Earth alive. The answer is up to you! Gameplay primarily consists of building individual units and structures on build pads. You build a refinery to harvest minerals and convert them to money. You then use the money to build a broad assortment of unit components, upgrades and an assortment of structures such as an Armory to unlock multiple component upgrades (also costing money) and a turret for example. Once you create your army, you can converge on the map to take control of Beacons where you can deploy more units. Capturing and keeping Beacons is vital in making your way across the map. Engage and eliminate all opponent units and structures to be declared the victor. Because of the mixed reviews, I have a permafree game that I really like as a KBAAD.*

16 of 35 reviews are four stars and above.

So we have a bonus pick: 2048 Deluxe.

I was browsing apps for my new iPad Air and found this and I absolutely love it. I was glad to find it permafree in the Amazon Appstore. It's a simple premise. Pair tiles with the same number to combine them. Two fours next to each other--swipe and create an eight. The idea is to keep combining tiles until your get the mystical 2048 tile (which I haven't yet). But your high score is tracked so you can keep trying to get higher and higher scores. One of the reviews says keep the largest number in the corner. 283 of 320 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: