Frontier Defense - Submarine Battle Free Game

Your weapons is torpedoes and mines , your enemy is a submarine fleet. With each level you gain experience and increase your rank , it is possible to increase the power of weapons and tower, but your enemy is also becoming stronger. Kill all the submarine going through all the levels , if you do not get something , you always have the opportunity to try again.

Features :

+ Update weapons increases its power.
+ Amazing underwater fighting
+ War game simulation at its best
+ strategy games is best.

Fun for the whole family! 100% FREE.