688(I) Hunter/Killer
Overview
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.
SteamVery Positive (81%)
216 Steam user reviewsMetacriticNot rated
Screenshots & media
Features, requirements and screenshots describe the Steam PC version. Other stores and editions may differ.
688(I) Hunter/Killer screenshot 1
All source screenshots (5)
Gameplay
Find 688(I) Hunter/Killer gameplay on YouTube ↗
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How to get the game
GOG
End date not supplied
Via CheapShark · buy at GOG
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How to claim & conditions
How to claim
- Open the retailer offer using the deal link.
- Confirm the edition, activation platform, region and final price.
- Complete the purchase with the retailer if the offer suits you.
Eligibility
- PC offer.
- Country availability and activation platform are determined by the retailer.
- Pricing data is in US dollars.
Costs & conditions
- The listed price is the game price before any retailer taxes or other checkout charges.
- Confirm the final total on the retailer’s site.
- Offer checked
- Oct 12, 2026 09:37 UTC
CheapShark onSale flag and current/regular prices from its official API.
Steam
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Via CheapShark · buy at Steam
- Check activation, edition and region at the retailer.
- Taxes may apply.
How to claim & conditions
How to claim
- Open the retailer offer using the deal link.
- Confirm the edition, activation platform, region and final price.
- Complete the purchase with the retailer if the offer suits you.
Eligibility
- PC offer.
- Country availability and activation platform are determined by the retailer.
- Pricing data is in US dollars.
Costs & conditions
- The listed price is the game price before any retailer taxes or other checkout charges.
- Confirm the final total on the retailer’s site.
- Offer checked
- Oct 12, 2026 09:37 UTC
CheapShark onSale flag and current/regular prices from its official API.
GamersGate
End date not supplied
Via CheapShark · buy at GamersGate
- Check activation, edition and region at the retailer.
- Taxes may apply.
How to claim & conditions
How to claim
- Open the retailer offer using the deal link.
- Confirm the edition, activation platform, region and final price.
- Complete the purchase with the retailer if the offer suits you.
Eligibility
- PC offer.
- Country availability and activation platform are determined by the retailer.
- Pricing data is in US dollars.
Costs & conditions
- The listed price is the game price before any retailer taxes or other checkout charges.
- Confirm the final total on the retailer’s site.
- Offer checked
- Oct 12, 2026 09:37 UTC
CheapShark onSale flag and current/regular prices from its official API.
Fanatical
End date not supplied
Via CheapShark · buy at Fanatical
- Check activation, edition and region at the retailer.
- Taxes may apply.
How to claim & conditions
How to claim
- Open the retailer offer using the deal link.
- Confirm the edition, activation platform, region and final price.
- Complete the purchase with the retailer if the offer suits you.
Eligibility
- PC offer.
- Country availability and activation platform are determined by the retailer.
- Pricing data is in US dollars.
Costs & conditions
- The listed price is the game price before any retailer taxes or other checkout charges.
- Confirm the final total on the retailer’s site.
- Offer checked
- Oct 12, 2026 09:37 UTC
CheapShark onSale flag and current/regular prices from its official API.
About the game
- Developer
- Sonalysts
- Publisher
- Strategy First
- Released
- Oct 26, 2006
Description & review sources
- 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.
Read full description
- A truly authentic simulation: Developed by Sonalysts, a defense contractor who designs submarine simulators for the US Navy
- Over 12 detailed operating stations: Control all aspects of submarine warfare, including the sonar suite, fire control, helm and target motion analysis
- Real-World Terrain: Ocean depth and water density for the entire globe are based on actual satellite topographical data
- Real-life situations: Conduct detailed training and single missions, plus a full campaign based on political analysis from real world situations
- Multiplayer Warfare: Seek and Destroy up to 8 players over the internet or LAN
- Full 3D Technology: Full 3D technology allows for multiple camera views and accurate 3D models of over 20 different naval weapons platforms
- Complete Control: Manage all of the resources of your submarine, including crewmen training and weapons load-outs
- Developer
- Sonalysts
- Publisher
- Strategy First
- Released
- Oct 26, 2006
Ratings & review sources
SteamVery Positive (81%)
216 Steam user reviewsMetacriticNot rated
System requirements
Features, requirements and screenshots describe the Steam PC version. Other stores and editions may differ.
Windows
Minimum
Recommended: Windows 2000/XP, Pentium III, 256MB RAM, 1.5G Hard drive space, 32MB video card (Nvidia Geforce or ATI Radeon) DirectX 8.1 compatible sound cardRecommended
Not provided by the platform.
macOS — not supported
The Steam PC metadata lists no support for this operating system.
Linux — not supported
The Steam PC metadata lists no support for this operating system.
Accounts, launcher & DRM
Store account and country availability should be checked with GOG.
GOG Galaxy optional
- DRM-free store policy
- Offline installers available
Features & game information
Features, requirements and screenshots describe the Steam PC version. Other stores and editions may differ.
Play modes
- Single-player
- Multi-player
Steam features
- Family Sharing
Controller & mod support
- Controller support
- Not specified
- Mod support
- Not specified
Game details
- Genres
- Strategy
- Developer
- Sonalysts
- Publisher
- Strategy First
- Released
- Oct 26, 2006
- Content type
- game
- Operating systems
- windows
All community tags
Community tag votes
- Strategy29
- Naval Combat27
- Simulation23
- Submarine19
- Naval16
- Military6
Languages & audio
- English
Related editions & add-ons
Steam purchase options; availability and pricing are confirmed on Steam.
Sources, updates & publisher notice
- CheapShark Oct 12, 2026 15:36 UTC
- Steam Spy Oct 11, 2026 21:56 UTC
- Steam Store Oct 11, 2026 21:56 UTC
Steam Spy playtime estimates
- Average: unavailable
- Median: unavailable
Source zero values are not a reliable game-length estimate.
Community tags describe the game. Source timestamps indicate when the stored data was checked.
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