”At last, the long wait for a worthy nuclear submarine simulation is over." - GameSpot
”688(I) makes it a fun challenge to sneak up on your enemy, attack, and get away without detection. With over 30 missions, it can keep the average gamer busy for many hours. And with multiplayer and a mission editor, there is a lot of play value for your dollar. If you are a fan of submarine sims, or have wanted to command a nuclear sub without the cramped space and lack of fresh food, then you should put 688(I) in your sights." - GameRevolution
688(I) Hunter/Killer, the most realistic submarine simulation ever developed for PC. Master the sonar and weapons control systems, learn to develop real target situations and outfit your boat with the latest advanced weaponry. Then use your skills to complete the tour of duty and earn your dolphins to become a true submariner.
Over 12 detailed operating stations: Control all aspects of submarine warfare, including the sonar suite, fire control, helm and target motion analysis
Multiplayer Warfare: Seek and Destroy up to 8 players over the internet or LAN
Real-life situations: Conduct detailed training and single missions, plus a full campaign based on political analysis from real world situations
Full 3D Technology: Full 3D technology allows for multiple camera views and accurate 3D models of over 20 different naval weapons platforms