Inten Sub is a challenging adventure game on www.flash-games.net for free. The goal for you is to maximize your score by controlling your submarine to smash as many tanks and planes floating on the water as possible. In this game, you should press the left mouse key to fill in the power. Once your power bar is full, just aim to your enemy and smash it. Meanwhile, you should be very careful about the cannonballs dropped from the tanks and planes on the water which will sharply surrender your health. Try to collect some bonuses which will help you to gain power. Come on and be careful, good luck!