SENSE: Save Editor Nine Sols Edition☀️

Features and info📌

• Runs in a browser 🌐
• Simple to use field editor ☑️
• Nice-looking modern web interface 🎨
• Compatible with the Steam version of the game 🔥

For non-Steam version of the game check out Nine Sols Save Editor. I also took the field info .json file directly from there.

Quick guide📋

1. Please, make a backup of your original save file
2. Select or drag'n'drop the save file you want to modify
3. Wait patiently for the file to open, it usually takes a few seconds
4. Modify your save file, Ctrl+F is your best friend
5. Download your newly modified save file and enjoy

Where is the save folder located💾

The default Steam save file location for Windows is:

%userprofile%\AppData\LocalLow\RedCandleGames\NineSols

Technical info⚙️

It turned out to be quite a technical challenge to make it all work. The biggest problem was to pack the data back in a way the game can still read it. The game is data marker sensitive and so the usual MessagePack encoding library just wouldn't cut it. MessagePack libraries mostly aim to provide a smaller file size rather than accuracy. I made rmpp rust crate and npm package specifically to solve this issue.

How's the data encoded🔣

The save data is stored in a deflated MessagePack-encoded binary file of .sav/.sav.bak extension. The latter simply being a backup. So the general editing process looks something like: inflate → decode → edit → encode → deflate.