Touch o mobile device or mouse o PC.
Tap (touch) airplaes to shoot at them ad destroy them.

You play as an AA gun (!) and have to protect your island base from invading airplanes. You should shoot down airplanes by clicking or touching them. Fortunately these airplanes are old and don’t have any guns or bombs, so they have to crush themselves to your island to hit you! And it gives you more time to shoot them down! You should shoot down airplanes by touching them. Note that big airplanes have more health and you have to shot them more than once!