Project Nautilus

Project Nautilus

Isthmus Studios · May 6, 2022 · First-Person, 3D, Exploration, Underwater, Adventure

Project Nautilus is free to play — no purchase needed. We track it so you know if that ever changes.

PC
Positive90% · 10
This game is free to play. Get it on Steam →

Screenshots

Project Nautilus price

Project Nautilus is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About Project Nautilus

Features of this Game


  • Immersive Drone HUD
  • Expansive World
  • Narrative Rich Immersion

Hello Drone Operator #4861!


Hello, and welcome to the Isthmus Corporation Family. My name is PASSION and I will be your managerial AI, and I will help oversee your work. We would like to remind you everything that you are seeing is confidential and would like to remind you of the NDA you signed at this time. Now let us begin what is Project Nautilus.

What to expect


Project Nautilus is a first-person underwater exploration game where you, a menial drone operator, navigate through the depths as directed by your employer, the shady mega-corporation, Isthmus Corp. As Isthmus Corporation lays claim to a previously undiscovered cave system deep below the surface, you are assigned to survey the hidden caverns and uncover their secrets. You are entrusted to expand the company’s wireless network with the placing of signal beacons as you explore. Your “trusty” managerial AI, PASSION, guides you to use your drone harpoon and drill to break open pieces of the environment and propel yourself further down into the depths below. As you explore the rich, biodiverse cave network you begin to discover remnants of a lost civilization and cultural artifacts including sculptures, etchings, and even old architecture. However, you must remember your one goal from Isthmus Corp., reach the bottom of this cave system and see what lies below.

https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/1953870/extras/IsthmusLogo_Steam.png

Project Nautilus — game info

Platforms
Windows
Player modes
Single-player
PC Game Pass
Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Project Nautilus is a submarine exploration game that players generally find solid and engaging, with a unique premise involving drone operation and underwater cave systems. Common praise includes the creative mechanics like beacon placement and the exploration-focused gameplay reminiscent of games like Aquanox, though some note the drone controls feel floaty and the game can be confusing at times.

Recommended Oct 28, 2022
Solid little project, albeit a little confusing at times. Reminds me of games like Aquanox and Turgor Pressure.
3 found this helpful
Not recommended Mar 28, 2025
Idk something sketchy about the ending it crashed my game and computer. After uninstalling I had no issues idk if it's suppose to be like that or if it's just broken but don't recommend in that manner
1 found this helpful
Recommended Nov 26, 2023
This is by far the greatest price of interactive media ever produced by mankind
1 found this helpful
Recommended Mar 31, 2023
[h1]Before I played Project Nautilus, I had a small pp, no friends, no gf, depression, and no life. These things havent changed, but the game is pretty good[/h1]
1 found this helpful
Recommended Oct 14, 2022
Corporate drone operator wage slave simulator.
1 found this helpful
Recommended Aug 29, 2022
You've been hired by ZUCC to do a drone survey of an underwater cave system, what will you find below?...Just a bunch of fish and rock, I bet! ;} Your drone is a bit floaty, but you get used to it. It comes with a drill for breaking rocks, and a harpoon for anchoring/pulling...but the most important tools are the beacons, which you need to place every so often to keep your signal strong...too weak a signal and you'll lose your drone. As for difficulty, you mostly just explore, but there were a few obstacles to deal with, such as the angler fish...I couldn't figure out if they were attracted to light or proximity, but once I realized they could be lured away by chopping up smaller fish with the drill, they were easy to avoid. As for the..."obstacle" over the long descending shaft...I couldn't figure out a way to effectively deal with it, so I just pulled it away and sped past it....it took a few tries, but it worked. The game has a surprising amount of backstory and lore, told mostly thru emails, so don't skip those! Now,there were a couple of issues: 1: Your A.I. "Passion" doesn't always do her lines right, sometimes cutting off/repeating, or just not activating. 2: At one …
1 found this helpful

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