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Watch trailer on Steam ↗FULL METAL COFFIN
Titanite, Mantle Array, Xenith · Published by Titanite, Mantle Array, Xenith
Very Positive — 94% positive (162 reviews) · 5 achievements
Last updated 6 Oct 2026
FULL METAL COFFIN is a 3D co-op submarine simulator. Crew your vessel with up to 4 players. Load the torpedoes, dodge incoming fire, and eliminate the enemy.
£4.59
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Price history
Simulation · 2026 · More under £5 games
Dive into FULL METAL COFFIN, a co-op 3D submarine simulation where you and three friends load torpedoes and fend off enemy fire.
About this game
A 3D co-op submarine simulator with up to 4 players, where you fight for control below the Antarctic. Taking place in flooded caverns deep below, you and your CREW will be tasked with operating a submarine to eliminate outposts, and defend against waves of enemies. Your vessel is specialty built using the latest in material science, to withstand the unique conditions posed by this new environment
Unlock new interesting torpedo types, and deploy them in combat. Load them immediately, or store them for future use. Planning and forethought are essential to a decisive victory against all enemies in the frontier
Good coordination and communication are heavily rewarded. Work together with friends to operate your vessel smoothly. Form a command structure, or naturally fill in where needed. Ensure steady operation of your submarine, and dominate the enemy
Operate a 3D submarine interior with up to 4 players
In depth sonar & hydrophone mechanics. Listen for your enemies, and bounce sonar pings off walls to gain advanced vision of the caverns
Craft unique torpedo types, for different situations
Forethought and communication are heavily rewarded. Pick your engagements wisely
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 or 11
- Processor: Ryzen 5500
- Memory: 8 GB RAM
- Graphics: GTX 1660s
- Storage: 3 GB available space
Recommended
- Requires a 64-bit processor and operating system
- Additional Notes: Anything above minimum will work
Supported Languages
Latest news
Patch NotesOfficial
Stability Patch 2 Release
Stability Patch 2 Was able to knock out a lot of the larger issues this go around, and add a bunch of requested settings to the game Additions:Slight glow on the sonar map (video settings) New helm control mode in control settings, allows to hold the movements keys to move the submarine, instead of tapping/pressing (controls settings) Added render scale slider (video settings) Player sub color selection (video settings) Effects quality settings (video settings) Tweaks: Made dropped enemy iron more visible (might rename it to scrap later on) Added slight momentum to the submarine Fixes:the dreaded crash on level 3 enemies phasing through walls players will no longer lock up a terminal if they crash/leave added additional colliders (gantry, main terminal + the tanks above the tubes) fixed torpedo models light leaking from the inside nuke teleport animation was incorrect torpedo recycler would sometimes display incorrect torpedo type when recycling torpedo ramming animation if done right after torpedo finished cooking host could start the game before all clients finish loading, causing them to be stuck in the lobby game crashing when client tried to select a levelif you're in a broken lobby, you should be able to leave nowPlease continue to report all the bugs you find! Thanks! -TitanRead full article on Community Announcements (Titanite)Patch NotesOfficial
Stability Patch 1 Release
Stability Patch 1 As promised. This fixes a lot of the immediate issues the game had on launch, and a few other things which have been on my radar Additions:added torpedo recycler button (cherry flavor) lights flicker when damage is taken Fixes:removed out of bounds glitch located by the crafting terminalsfixed some improper AI network callsfixed a log overflow crashinaccurate crafting terminal UI fixedinaccurate crafting terminal button logic fixedfixed torpedo teleporter visual glitchimmovable ghost torpedo should be fixed, if not then use the recyclerterminal was stuck shaking violently if you died while shakingrandom fullscreen settings issue fixed Please continue to report all the bugs you find! Thank you, have a good weekend! -TitanRead full article on Community Announcements (Titanite)AnnouncementsOfficial
New Roadmap (And a thank you!)
Firstly, thank you!I just want to thank everyone for the warm reception. I'm genuinely blown away. As such, I'm expanding the planned post-release content for you. I'm really inspired by the atmosphere of hope for the games growth, so I want to deliver on that. I'm so happy, thank you so so much! -Titan Updated Roadmap:There will be 2 to 3 stability patches, as I fix the major bugs & issues in the coming days. Then, I'll work on making 3 large content updates The first stability patch will be released tomorrow, June 26th. Update 1 and its planned content will be announced before the end of next week Community feedback & ideas are my primary focus. Each update's content will be announced beforehand, so you can continue to weigh in and give suggestions while it's being produced. After update 3 is released, I will take a look at the game and figure out what the next step is. What you want is important to me! so please let me know what you'd like to see, leave a comment or start a thread on the community hub!Read full article on Community Announcements (Titanite)AnnouncementsOfficial
Release plans, and moving forward
Release plan:Currently, the plan is to release the game this coming Wednesday, June 24th, and support the game with bug fixes & minor additional content for the month that followsIt's been a long journey. This is my first ever release, and it was hard fought. I've learned so much through all the mistakes, and grown so much as a developer. I hope that you can enjoy what's here, as unfortunately I've reached my limit for development. I've wrapped it up the best I could, and I think it's time that I take the next step forwardPlanned post release content:New enemy typeNew torpedo typeLevel difficulty selectionLevel score (based on your performance ingame)New maps, and a potential new game modeI'm regretful that I haven't communicated much, but making this game has been incredibly difficult and left me with little energy to focus outward. I wish to change that going forward this coming month, and do my best for youSincerely, TitanRead full article on Community Announcements (Titanite)
