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
windows Minimum
OS: Windows 2000/XP/7
Processor: Pentium III
Memory: 256MB RAM
Graphics: 32MB video card (Nvidia Geforce or ATI Radeon)
Storage: 1.5G Hard drive space
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-01-16
Winter is the Perfect Time to Get Some Extra YXP
Winter season is much better with more games to play, so let’s kick-off 2026 with a storewide promotion bang and YXP level-ups then, shall we? For the first promo campaign this year we have prepared some incredible price drops and offers that you simply can’t miss out on! For the very short duration of only 3 days, you will have the opportunity to earn 50 extra YXP points in your account by making an order over 10€ …
Dive into Adrenaline-Fueled Battles in Code Vein II
We are starting the year with a review for a title that is ready to hit the market hard, because Code Vein II is the upcoming sequel to the 2019 soulslike Action RPG developed by Bandai Namco Studios. The game’s Steam page is already getting a lot of attention and for those of you looking to find out what is new in the gameplay and storyline compared to the original title, well… you are at the right place!