When your island is in danger and you are the only person can save it, what will you do? You should use your cannon to shoot your enemies and protect your island. There are many boats and airplanes are approaching you, use your physics knowledge to defeat them. Good luck! DEF Island is a terrific game which you can play for free in in fsiv.com. With DEF Island game, we supply many cool Fsiv games to play at no cost.

Use Left Mouse button to Aim and Shoot,

shooting, boat, cannon, defend, island, shoot, aircraft, physics, airplane, war..