Cruiser Command

Hello.
Shields are very strong with much power,so here´s my idea.
At first you have to find an asteroid.Then you pull it with a tractor beam and it will be automatically loaded in the asteroid cannon.I think off an extra console.There you can change the force with which you shoot the asteroid.more force = more energy cost.The cannon´s asteroids should be between 5 and 10 times faster than other moving asteroids.

Also more kickback and when the asteroid hits something, it needs to give it momentum, since you ARE firing asteroids at them.