Your mission in this cool submarine game is to use your torpedoes to blast away ships by sneaking up underneath them and sinking as many of them as possible. Each level has an objective that you must meet in order to move onto the next level. If you start sinking enough ships you will earn money that you can use to buy upgrades like armor, speed, fuel efficiency, and torpedoes. You have a very limited amount of health and energy to use while underwater, so be sure to keep an eye on those indicators while sinking ships. Use the ARROW KEYS to control your submarine and use "W" KEY to fire torpedo up, "A" KEY to fire torpedo to the left and "S" KEY to fire to the right. Good luck!