BTank:

In Brief:
BTank is a game in which you need to destroy balls with different properties using projectiles. By scoring points for destroying the balls, you can get extra lives. There are 30 levels to work thorough.

The aim of the game is to destroy all the balls on each of the colourful levels. When hitting a ball, it divides into two and each of the two parts will divide into a further four smaller balls. Some balls drop power ups that either repair damage caused by balls hitting you or double your fire power. Move your cannon using the left & right arrow keys or the A & D keys and fire using the space bar. As soon as you've removed all of the balls the next level starts immediately. You can tell when a new level starts because the background colour changes

Try to hit the larger balls first as they are the most likely to hit you. You get three lives, once you've lost them all you lose, but any level you've unlocked you can play at your leisure and restart from where you left off.

You can see a few videos of game play HERE and one via the Steam store page HERE.

You can also see some Steam community reviews of the game HERE.

Conclusion:
Another quick-fire game that can be completed very quickly despite their being 30 levels to work through. I completed seven levels in a matter of minutes; however, that said, the levels do get harder as you progress to the higher levels and you're less likely to survive as easily.

I never figured out what the repair crates were for that are located on the same level as the cannon. I assumed they repaired your cannon, but they never appeared to activate, instead repairs seemed to occur when I caught one of the power ups that fall randomly following the destruction of one of the balls.

Notes on Security
I scanned a zipped copy of the installed game using Virus Total and it found zero hits from 64 antimalware engines. If you wish to see the Scan results, they can be found HERE