Introduce
The game starts to be allowed first to make the training, to hits with the computer may choose the difficulty, adjusts the cannon
with the about key the angle, simultaneously
must pay attention to the back cloud the trend, always adjusts
dynamics according to the wind power gentle breeze, holds down the
space bar
keyto gather the strength launch
cannon. The cannon can automatically remember on secondary
emission dynamics, will use in when the next time launch will make the
reference