No rocket science, but plenty of rockets!METAL MAYHEM
In a world dominated by sinister robots, take control of the Scrap Tank and take the fight to them! Battle your way through the metal onslaught using an impressive array of hi-tech weapons. Do you have what it takes to survive against endless hordes of tanks, jets, airstrikes, missiles, helicopters and kamikaze bots?BUILD & UPGRADE
Destroy your enemies, collect their scrap, and use it to upgrade and expand your tank and add variety to your destructive capabilities by choosing from 20 different upgrades. Become bigger, stronger, tougher, and wield more guns!POWERFUL WEAPONS
Choose between powerful lasers that cut through machines, flak cannon that that clear the skies, energy balls that blast through a multitude of enemies and salvo's of missiles that will home in on any target. All of these weapons and more are at your disposal and offer dynamic gameplay and tactics.HOURS OF FUN
With over 100 carefully designed waves in various difficulties, you can enjoy many hours of endless fun as you fight to survive another wave of level. Thanks to our dynamic level generation system, no two runs will ever be the same.
Follow us on: http://scraptank.gamistrygames.com 
http://www.facebook.com/gamistrygames 
http://www.facebook.com/scraptank
http://www.twitter.com/gamistry 
http://www.youtube.com/user/gamistry

// Option A //

To download Scrap Tank mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Scrap Tank mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Scrap Tank from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Scrap Tank in HappyMod App.