Project Nautilus: Dive into a Shady Underwater Corporate Mystery

9/1/2026, 4:35:06 AM

Release date: 5/6/2022

Tags: #first-person #3d #exploration #underwater #adventure #immersive #singleplayer #immersive-sim

User Reviews

Score: 90%Positive
Review Count: 10 reviews
Fetched At: 9/1/2026, 4:35:06 AM

Reference prices

Japan

Free to Play (JPY)

Steam JP

Free to Play (USD)

Steam

Live Store Snapshot

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Japan Price: Free to Play
Global Price: Free to Play
Sale Status: Regular pricing
Price Checked At: 9/1/2026, 4:30:38 AM

Key highlight

Project Nautilus is a free-to-play, first-person underwater exploration game where you operate a drone for the mysterious Isthmus Corporation. Experience an immersive world with a detailed HUD and a narrative rich with c

Who this is for

For those who enjoy underwater mysteries and immersive exploration, Project Nautilus is a dive worth taking. As it's free-to-play, there's no barrier to entry for uncovering the secrets of the deep.

Details

Overview

Project Nautilus invites players into a first-person underwater exploration experience, casting you as a drone operator working for the enigmatic Isthmus Corporation. Guided by an AI named PASSION, you'll navigate the ocean's depths, uncovering secrets while bound by a strict Non-Disclosure Agreement. This free-to-play title emphasizes immersion and narrative, drawing players into a world of corporate intrigue beneath the waves.

Highlights

Immersive Drone HUD: Experience the underwater world through a detailed drone interface, enhancing the feeling of being in control of remote exploration.
Expansive World: Explore vast underwater environments, offering a sense of scale and discovery as you complete your missions.
Narrative Rich Immersion: Engage with a story driven by corporate mystery and confidential operations, making every discovery feel significant.

Who It's For

This game is ideal for players who enjoy atmospheric exploration, narrative-driven experiences, and immersive simulations. If you're drawn to mysteries, enjoy first-person perspectives, and appreciate games that pull you into their world, Project Nautilus offers a unique dive into the unknown.

Game Info

Developed and published by Isthmus Studios, Project Nautilus is a free-to-play title released on May 6, 2022. It features a single-player experience focused on exploration and adventure within a 3D underwater setting. The game is designed to be highly immersive, utilizing a drone HUD to enhance the player's connection to the environment. While it supports family sharing, the core gameplay is a solo journey into the depths.