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

Install the package with pip install spireslayer.

1. Creating your own save file editor

Create your own script as needed, for example:

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

# Declare a valid path to the save folder
save_file_path = "C:\Program Files (x86)\Steam\steamapps\common\SlayTheSpire\saves"

# Declare a save editor that points to the save_file path
save_editor = SaveEditor(save_file_path)

# Edit whatever you want.
# here we are making 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 anything that can be adjusted to your 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)

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

2. Running the save file editor

• Open the game. You can create a new game or continue your session.
• On the first encounter after loading the game, hit the menu and choose Save & Quit.
• From the main menu, switch back to your script and run it. You don't need to close the game.
• Back to your game and click Continue. Enjoy the game!

Note

Currently, the package only supports The Defect. For other character, you can create the method yourself (PR is greatly appreciated!) or alternatively use the provided API SaveEditor.get_json() to get the JSON formatted save file, change the JSON directly, and assign it back with the provided API SaveEditor.set_json(). For example:

from spireslayer.save_editor import SaveEditor

editor = SaveEditor(...)

save_file = editor.get_json()
save_file['current_health'] = 1000
editor.set_json(save_file)

Refer to the readable save file example for more example.

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 features so that the save data can be programmatically edited.