Tank Defender - Alien Attack Home Tank Defender - Alien Attack 0.0 / 5 ( 0 votes ) Your Rating? Discover Tank Defender - Alien Attack – Play Free Now on WebGameFree! The aliens want to confuse you, and they send out white and black enemies to attack the earth in this arcade Tank Defender on RegionGame. You can't shoot white with black bullets and opposite. To kill the white enemy tap on the left or press left arrow to shoot white bullets, and for black right arrow key. If you shoot the wrong color enemies get even stronger! Categories in which Tank Defender - Alien Attack is included: Soccer Sports Ball