Steel Coffin

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📖 Introduction

In the darkest days of the Atlantic War, a lone submarine sets out on a perilous journey beneath the waves. Tasked with providing critical support to Allied forces in Europe, your vessel must cross a vast, unforgiving ocean. Silent, and under constant threat. The cold steel around you groans under the pressure, and the only thing standing between survival and a watery grave is your crew’s grit and your command.

As enemy planes hunt overhead and the deep crushes in below, you must navigate a deadly balance of depth, speed, and silence. Every decision carries weight — push too hard and systems will fail, rise too close and you risk detection. Manage your crew, repair what you can, and pray the hull holds. This is not just a mission... it’s a descent into the unknown.

🎓 How To Play

🎯 The Objective

Your mission is to safely guide your submarine across the Atlantic and reach Europe. To survive the journey, you’ll need to manage your crew and systems while balancing depth and speed. Keep the sub running, avoid detection, and hold together long enough to complete your crossing.

🕹️ Basic Controls

- Left Mouse Button To pick up and move crew members.
- Middle Mouse Button/WASD to pan the camera.
- Scroll Wheel/ Q & E to zoom the camera in and out.
- Up & Down Arrows surface and dive the submarine.
- Left & Right Arrows to increase and decrease your speed.

⚙️ Core Mechanics

🧑‍✈️ Crew Management

Drag your crew to different rooms to operate systems or perform repairs. Most rooms need at least one crew member to function, and some tasks, like repairing damaged systems, require two crew members working together.

🔧 System Damage & Repairs

Systems degrade over time or take damage from depth charges and pressure. You’ll need to assign two crew members to a damaged room to begin repairs. If a system hits 0% health, it will have a critical effect on the submarine’s functionality.

💤 Healing Injured Crew

Crew members can be injured by depth charges, system failures, or pressure damage. Send them to the Crew Quarters to recover. While healing, they won't be able to operate systems — so plan ahead!

🛠️ Room Types & Their Roles

Command Bridge: Speeds up crew movement when staffed.

Navigation Deck: Controls the sub’s speed. If damaged, you won’t be able to move.

Ballast Room: Controls diving and surfacing. If it fails, the sub may rise or sink uncontrollably.

Sonar Station: Reveals enemy detection attempts. Without it, you'll be vulnerable to surprise attacks.

Engine Room: Powers the sub. If it overheats or fails, you’ll take hull damage.

Oxygen Scrubber: Keeps air breathable. If it breaks, your crew will slowly suffocate.

Maintenance Room: Lets crew monitor system integrity and upcoming repair needs.

Crew Quarters: Allows tired or injured crew to rest and recover.

*Cover image generate with AI*