Take your tiny cube tank to the arena and destroy all the rival minion tanks to complete the level. Fight the big boss at the end of each level. Each tank you destroy will leave a crystal that rewards you 10 points. The blue crystal freezes the enemy tanks present on the arena, so you can take them out easily. Use these points to upgrade your cube tank into a monster by improving its firing rate, armor and health. As the level increases, the enemy tanks become more furious. So use your money wisely to avoid defeat. Use the arrow keys to move your tank and mouse to move the turret and fire towards the enemy.