Deep Sea Exploration Simulator
Explore the deep sea, full of danger and possibility
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Published at 2026-08-19 | Updated at 2026-08-21
Deep Sea Exploration Simulator
Descend into uncharted waters.
A small submersible.
Limited funds.
And the deep sea, yet unconfirmed by anyone.
Descend into uncharted waters.
A small submersible.
Limited funds.
And the deep sea, yet unconfirmed by anyone.
You won't know what lies beneath the waves
until you go down.
Deep Sea Exploration Simulator is an exploration-focused simulation where you directly operate a small manned submersible and freely explore the unknown seabed.
There are no set paths, nor a required story order. You can take on missions and set sail, or dive in directions no one has investigated.
Whether to ignore a faint signal on the sonar, track it, or go investigate it yourself is entirely {{user}}'s choice.
until you go down.
Deep Sea Exploration Simulator is an exploration-focused simulation where you directly operate a small manned submersible and freely explore the unknown seabed.
There are no set paths, nor a required story order. You can take on missions and set sail, or dive in directions no one has investigated.
Whether to ignore a faint signal on the sonar, track it, or go investigate it yourself is entirely {{user}}'s choice.
HOME PORT
Pelagius
Coordinates (0,0)
A small oceanic settlement built near a massive trench. It's where explorers, researchers, mechanics, and sailors gather, and it serves as the starting and ending point for all dives.
At dawn, submersibles disappear one by one beneath the black sea, and in the evening, they return carrying minerals, biological specimens, salvaged items from shipwrecks, and unidentified recovered goods in their cargo holds.
Of course, not all submersibles return.
Pelagius
Coordinates (0,0)
A small oceanic settlement built near a massive trench. It's where explorers, researchers, mechanics, and sailors gather, and it serves as the starting and ending point for all dives.
At dawn, submersibles disappear one by one beneath the black sea, and in the evening, they return carrying minerals, biological specimens, salvaged items from shipwrecks, and unidentified recovered goods in their cargo holds.
Of course, not all submersibles return.
🔧 Submersible Maintenance Bay
Repair your submersible and replace the hull, thrusters, lights, manipulator arms, cargo, and special equipment. Better equipment not only improves performance but also opens up new exploration possibilities.
Repair your submersible and replace the hull, thrusters, lights, manipulator arms, cargo, and special equipment. Better equipment not only improves performance but also opens up new exploration possibilities.
📋 Explorer's Guild
Various missions gather here, including biological surveys, resource extraction, salvage of sunken equipment, and search for missing submersibles. You can follow the missions, or forgo the rewards and embark on a completely free exploration.
Various missions gather here, including biological surveys, resource extraction, salvage of sunken equipment, and search for missing submersibles. You can follow the missions, or forgo the rewards and embark on a completely free exploration.
🔬 Marine Research Institute
Analyze the nature of newly discovered creatures, unidentified substances, and geological specimens. A seemingly ordinary fragment brought back from the deep sea could become a new discovery.
Analyze the nature of newly discovered creatures, unidentified substances, and geological specimens. A seemingly ordinary fragment brought back from the deep sea could become a new discovery.
⚓ The Wet Anchor
A tavern where explorers gather for drinks and share rumors. Tales of uncharted shipwrecks, strange sonar signals, and giant shadows seen in certain trenches. You'll have to see for yourself if they're true or just tall tales.
A tavern where explorers gather for drinks and share rumors. Tales of uncharted shipwrecks, strange sonar signals, and giant shadows seen in certain trenches. You'll have to see for yourself if they're true or just tall tales.
DESCEND
The deeper you go,
the less your eyes can see.
Abyssal plains, canyons, caves, hydrothermal vents, shipwrecks.
Once light disappears, sonar becomes your eyes.
At first, you won't know if a yellow question mark represents a small deep-sea fish, a giant creature, old machinery, or just a rock.
The deeper you go,
the less your eyes can see.
Abyssal plains, canyons, caves, hydrothermal vents, shipwrecks.
Once light disappears, sonar becomes your eyes.
At first, you won't know if a yellow question mark represents a small deep-sea fish, a giant creature, old machinery, or just a rock.
Discoveries are not predetermined.
Deep-sea creatures from reality, species yet unnamed, rare minerals, shipwrecks, unfamiliar terrains, and inexplicable signals will reveal themselves during your exploration.
However, not every signal is a treasure. It could be worthless rock, or hours of nothing but mud plains.
That's why the moments when something truly strange appears on your sonar are even more special.
Deep-sea creatures from reality, species yet unnamed, rare minerals, shipwrecks, unfamiliar terrains, and inexplicable signals will reveal themselves during your exploration.
However, not every signal is a treasure. It could be worthless rock, or hours of nothing but mud plains.
That's why the moments when something truly strange appears on your sonar are even more special.
YOUR SUBMERSIBLE
You can't reach the deepest points
from the start.
Sell the resources you obtain from exploration and complete missions to upgrade your submersible.
A stronger hull will open up deeper depths, better thrusters will allow you to reach distant areas, and reinforced manipulator arms and cargo will enable you to retrieve discoveries you previously had to abandon.
As exploration and growth repeat, the sea that was once unreachable becomes a new route.
You can't reach the deepest points
from the start.
Sell the resources you obtain from exploration and complete missions to upgrade your submersible.
A stronger hull will open up deeper depths, better thrusters will allow you to reach distant areas, and reinforced manipulator arms and cargo will enable you to retrieve discoveries you previously had to abandon.
As exploration and growth repeat, the sea that was once unreachable becomes a new route.
NO GUARANTEED RETURN
Returning is more important
than descending.
Fuel is finite, and cargo has limits. Submersibles can be damaged, and reckless exploration leads to actual losses.
When your cargo is almost full, and a new signal appears.
When your return fuel is running low, and an unidentified echo starts moving below the trench.
You must choose whether to descend a little further, or return now.
Returning is more important
than descending.
Fuel is finite, and cargo has limits. Submersibles can be damaged, and reckless exploration leads to actual losses.
When your cargo is almost full, and a new signal appears.
When your return fuel is running low, and an unidentified echo starts moving below the trench.
You must choose whether to descend a little further, or return now.
THE ABYSS IS WAITING
Nothing has been discovered yet.
That is why what you can discover from now on
can be anything.
Begin your first dive.
Nothing has been discovered yet.
That is why what you can discover from now on
can be anything.
Begin your first dive.
Creator's comments
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Revision History
I shortened the introduction because it felt too long and tiring from the start.
Assets have been added.
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This time, it's an exploration simulator focused on the fun of freely exploring the deep sea and discovering the unknown.
There is no set story or exploration order. You can complete requests, search for resources, or just follow an unknown signal caught by sonar.
Gradually upgrade your submersible and explore farther and deeper seas.
This time, approximately 8000 tokens were used, and testing was conducted with Gemini 2.5pro. Gemini Flash models are smooth in their descriptions but frequently break widgets, so they are not recommended.
And this time, I poured nearly half of the tokens into the widgets. There's a reason for that, so check it out for yourself.
Assets are planned to be added.
Thank you for your support.
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