Undertale Save Game Converter Switch

Undertale Save Game Converter, with full bi-directional PC/Switch conversion ability.

The project is inspired by jonyluke's Undertale Save Converter, which also supports bi-directional conversion.

Converting from PC to Switch

Make sure you have copied your game's file0, file9, and undertale.ini files into the folder with the undertale_save_converter.exe file. (These files are typically located in your system's %LocalAppData%\UNDERTALE\ folder)

Use your command prompt to browse to the folder, then execute undertale_save_converter.exe and select the first menu option.

Alternately (if you want to run the script via python), execute python undertale_save_converter.py (requires Python 3 to be installed).

Converting from Switch to PC

Make sure you have the undertale.sav file copied from your Nintendo Switch placed in the folder with the undertale_save_converter.exe file. This file can be obtained from a modded switch by using tools such as Checkpoint or JKSM.

Use your command prompt to browse to the folder, then execute undertale_save_converter.exe and select the second menu option.

Alternately (if you want to run the script via python), execute python undertale_save_converter.py (requires Python 3 to be installed).

Compiling the executable

(if you don't want to download and use the supplied undertale_save_converter.exe file)

• Install Python 3.4 (x86) on a Windows computer, making sure you select the option to add Python to your path.
• Install the Py2Exe utility (py -3.4 -m pip install py2exe).
• Install 221/ pywin32-221.win32-py3.4.exe.
• Check out this git repo to a folder on your local computer.
• Browse to the folder and execute py -3.4 -m pip install -r requirements.txt (to install dependencies).
• Execute py -3.4 -m py2exe.build_exe undertale_save_converter.py to compile the undertale_save_converter.py file to an .exe file.
• Look inside the dist folder for your newly created undertale_save_converter.exe file