Rules: Asteroids are flying through space towards earth, with your plasma wall building hammer send them back and save the earth!
You need to stop the asteroids getting passed you and hitting Earth. The plasma walls you build will hopefully deflect them.
Prevent all eight waves of asteroids and you will have saved the earth!
‘Arrow keys’ to move about, remember you are in space.
‘Space’ to use plasma wall hammer – but they doesn’t last for long and your hammer needs time to recharge.
Source, Copyright: https://github.com/andy-mcgrath/sendtheasteroidsback