Saving Little Alien

Some aliens are cute, but some have no mercy and desire nothing, but bloody massacre. Protect innocent aliens by drawing a protecting field and release the button to see your result!

When aliens war between each other, don't expect anything good about it. One nation is dominating the other, however, you can help the second one survive. Draw the red line in the drawing field and release the button when you are ready. See how your protective structure works and proceed on the next level.