Slay the Spire faster by editing the save file! If done right, this will keep the fun while avoiding too much time to be wasted.

How the script works

• It starts by finding the obfuscated autosave file that named with this format: <Name of the character>.autosave. For example, see DEFECT.autosave.
• The SaveEditor object will decrypt the save data and convert it to an editable JSON object format.
• At this point, you can edit the json object as needed.
• Finally, call the SaveEditor.write_json_to_file() and the script will write the modified save file back to the obfuscated save file format, replacing the old one.

How to use the package

1. Install & Identify

Install the package with pip install spireslayer.

Identify your game installation path.

This package assumes the Steam default installation on Windows: C:\\Program Files (x86)\\Steam\\steamapps\\common\\SlayTheSpire.

If your installation happened to be using the default, then you don't need to pass any arguments when calling the SaveEditor. The package will handle it for you:

from spireslayer.save_editor import SaveEditor

save_editor = SaveEditor()

For any custom path (e.g. other marketplace or OS), please specify the installation path when initializing the SaveEditor object:

from spireslayer.save_editor import SaveEditor

# custom Windows path
save_editor = SaveEditor(
    installation_path="D:\\MyGames\\SlayTheSpire",
)

# or linux path
save_editor = SaveEditor(
    installation_path="/home/rahmat/.steam/debian-installation/steamapps/common/SlayTheSpire",
)

2. Create your editor script

Create your own editor behavior by importing the SaveEditor to your python script:

# defect_editor.py

from spireslayer.save_editor import SaveEditor
from spireslayer.decks import Deck
from spireslayer.card import Card
from spireslayer.templates.defect_card import GLACIER, DEFRAGMENT, BLIZZARD

save_editor = SaveEditor()

# let's start by creating a custom powerful deck for our Defect
save_editor.set_deck(Deck([
    Card(GLACIER),
    Card(GLACIER),
    Card(GLACIER),
    Card(DEFRAGMENT),
    Card(DEFRAGMENT),
    Card(DEFRAGMENT),
    Card(BLIZZARD),
    Card(BLIZZARD),
    Card(BLIZZARD),
    Card(BLIZZARD),
    Card(BLIZZARD),
]))

# or maybe increase our Defect's max orb
save_editor.update_max_orbs(15)

# or basically anything you need
save_editor.update_current_health(400)
save_editor.update_max_health(500)
save_editor.update_hand_size(10)
save_editor.update_energy_per_turn(20)

# for attributes that are not yet provided within the package's method, you can use the generic update_attribute method
# you can find the key for each attribute in the example JSON save file provided in this project
save_editor.update_attribute('current_health', 90)
save_editor.update_attribute('hand_size', 10)

# After customization is finished, call this method to rewrite the save data back to the original place.
# WARNING: The old save file will be replaced.
save_editor.write_json_to_file()

3. Run the editor

• Open the game. Create a new game or continue any session.
• On the first encounter after loading the game, hit the menu and choose Save & Quit.
• From the main menu, switch to the script and run it. Closing the game is actually unnecessary.
• Switch back to the game and click Continue.
• Enjoy the game!

Notes

• This package now supports Colorless Card, and nearly all 4 playable hero's cards (thanks @gabrekt!).

• There is a know issue with the Watcher's Rushdown Card not being correctly recognized.

• For any change that are not yet supported within the package, please use the provided API SaveEditor.get_json() and change it directly. For example:

  from spireslayer.save_editor import SaveEditor
  
  save_editor = SaveEditor()
  
  save_file = save_editor.get_json()
  save_file['current_health'] = 1000
  save_file['some-key'] = 'something-something'
  
  # don't forget to give it back to the save_editor
  save_editor.set_json(save_file)
  
  save_editor.write_json_to_file()

  Refer to the readable save file example for more available keys.

• PR is always appreciated!

Disclaimer

I got the save file encryption logic from Kirill89's gist written in JS. What I did was only rewriting it in python and adding modularity of the save editor.