Introduction

Sub System is a simulation game that attempts to simulate the inner workings of a submarine. The game is currently in invite-only alpha development, and is being developed by a small team of volunteers.

You can find a list of all the system in the game on the left, along with the submarine systems diagram, submarine map, and system dynamics document. Feel free to ask questions or contribute on GitHub.

⚠ LICENSE

© 2026 Floffah. All rights reserved.
Shared for viewing and feedback only.
You may not copy, redistribute, modify, implement, or use these designs, story, or other content in any project (commercial or non-commercial) without written permission from the author.

The Submarine

In Sub System you spend the vast majority of your time running the systems of a submarine that spends long isolated periods of time underwater. It is owned by the Luminous government, and is set in the year 2040.

The submersible is a Meridian-class Deep Research Vessel with the name LRSV Meridian Basal and registration MDRV-001. It has 3 sister ships: LRSV Meridian Apex (MDRV-003), LRSV Meridian Zenith (MDRV-009), and LRSV Meridian Prime (MDRV-012). Basal was the first Meridian-class vessel built, and although the other ships are of the same class, they are significantly upgraded and changed. Basal was built with several fundamental oversights and issues, which the player must overcome. It is also getting quite old.

The Luminous aquatic engineering division was very confident that this submersible design would be sufficient, as the nation has built hundreds of different interstellar ships that work well. Their confidence paid off as Basal is still used, but it is showing cracks that the later models lack.