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FULL METAL COFFIN is a 3D co-op submarine simulator.
Released 24 Jun 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.
Developed by Titanite, Mantle Array, Xenith · Published by Titanite, Mantle Array, Xenith









FULL METAL COFFIN has about 152 positive and 10 negative player reviews out of a total 162. We'll add a detailed breakdown here when there are more reviews.

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
| Platforms | Windows |
|---|---|
| Achievements | 5 |
| Age ratings |
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| Controller required | No |
| Content notices |
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