Hunt enemy convoys, battle destroyers, attack land bases, and shoot down aircraft in this long-awaited sequel to Crash Dive.

Take command of a Gato-class submarine prowling the South Pacific in search of enemy shipping to sink.

Sneak past the destroyers and torpedo the transports, or surface and engage the sub-chasers in a deck gun duel.

When the enemy planes come in on a strafing run, man your AA guns to take them down!

Evade the hunting escorts before they can crush you with their depth charges.

Features:

• Smoothly blends a submarine simulator with arcade action.
  
• Provides the tools for both stealth and offense; you decide how aggressive you want to be.
  
• Full day/night cycle and wide range of weather conditions affect visibility and weapons.
  
• Crew health and location-based damage affects the performance of your sub.
  
• Optional crew management and detailed damage control (or let the AI take care of that for you).
  
• Optional upgrade tech tree for your sub (can also be left to the AI). 
  
• Extensive campaign mode: 10 patrols throughout the war and across the South Pacific.
  
• Random mission generator for deep replayability.
  
• Both randomly-generated maps and real-world locales including the Solomon Islands, Philippines, Sea of Japan, and more!
  
• Moddable game files if you feel like hacking.