Sunless Sea: Rewritten
A downloadable Sunless Sea mod
An ambitious total conversion mod, we bring you a Victorian adventure set in a universe parallel to the cosmos of Sunless Sea and Sunless Skies. Hundreds of new stories, 45 new ports, and 30 new officers and mascots. Over 100,000 words of new content. With new art, soundtrack, factions, ships, weapons, and items, Sunless Sea: Rewritten offers you a new world to explore, discover, and survive.
Posey's Big Update adds a variety of new quests to the game, filling out ports that were previously lacking in content. It also makes multiple previously unobtainable Legacy items... obtainable! It also adds Posey.
Hold onto your hats - there are just 11 assorted things to do until the mod is content-complete!
Download
Install instructions
***Back up save files***
Go to C:/Users/[YourUsername]/AppData/LocalLow/Failbetter Games/Sunless Sea/Saves/ and back up your save files.
***Unzip Files***
Use 7-Zip, WinRAR, or the built-in Windows extractor to unzip Sunless Sea: Rewritten and Sunless Sea: Softcoded files.
***Install game files***
Copy "Sunless Sea Rewritten" folder into C:/Users/[YourUsername]/AppData/LocalLow/Failbetter Games/Sunless Sea/addon/ (create folder if needed).
***Install images***
Copy images from "SSR Images" folder to C:/Users/[YourUsername]/AppData/LocalLow/Failbetter Games/Sunless Sea/images/sn/icons/ (create folder if needed).
***Install Sunless Sea: Softcoded***
Download from https://www.nexusmods.com/sunlesssea/mods/38/.
Place contents of SSSoftcoded folder into your root folder (e.g., C:/Program Files (x86)/Steam/steamapps/common/Sunless Sea/).
Copy "audio" folder from Sunless Sea: Rewritten download to C:/Users/[YourUsername]/AppData/LocalLow/Failbetter Games/Sunless Sea/ (create folder if needed).
NOTE: Although playing with the Sunless Sea: Rewritten soundtrack installed is the intended experience, modded audio can cause stuttering or occasional crashes. If you have persistent issues, remove the files from the "audio" folder. Perhaps consider purchasing the soundtrack separately instead? https://charlieeastwood.bandcamp.com/album/sunless-sea-rewritten-ost
Disclaimer: Adjust paths if Sunless Sea is installed on an external drive or a different location. Replace "C:/" with the correct drive letter or location and follow the same folder structure.
Development log
- Posey's Big Update28 days ago
- Engines and Ambitions99 days ago
- Ports and PunishmentsNov 30, 2025
Comments
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Can't wait to try this out once it's completed! Any chance the final version will be available on Nexus mods?
This mod is fucking amazing.
Hello, is this still in development?
Have an embarrassingly late response: Yes! Things were up in the air for a while, but I've seen a surge of motivation lately and huge strides forward have been made.
Good!
Love this mod! It's the Sunless Sea 2 which we never got (Sunless Skies is great, but it has different atmosphere, at least for me).
I liked new ports a lot, ammo system, and, of course, the stories, the stories!
Excited to see what awaits us in future updates!