Its time to get in some old school top down shooter action in the Submarine Showdown shooting game. You are standing guard on your Navy submarine and there are bad guys who have breached your subs security and are trying to destroy you and the rest of the crew. Use all of the different guns and weapons that you have to kill the bad guys before they destroy your sub. Use your guns as well as your Claymore bombs and grenades to kill all of the bad guys before its too late. Your submarine crew is counting on you to save the day.