Undo the Spire 2

by kefengc·v1·Updated 2026-04-09

Undo the Spire 2 is an in-combat undo/redo mod for Slay the Spire 2.

Screenshots 3 screenshots

About this mod Machine translation

Undo the Spire 2 is an in-combat undo/redo mod for Slay the Spire 2.

Undo the Spire 2

🎮 **Undo the Spire 2** is an in-battle **Undo/Redo** mod designed specifically for "Slay the Spire 2". It is not a complete time retrieval system. Its goal is to provide a stable and reliable "regret medicine" for your common single-player combat misoperations!

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✨ Core Functions

  • **Multi-step undo/redo**: During combat, you can perform multi-step undo and redo operations.
  • **Always display HUD button**: The interface always displays intuitive undo/redo buttons, making operations within easy reach.
  • **Shortcut key support**: Use the familiar `Ctrl+Z` (undo) and `Ctrl+Y` (redo) shortcut keys to operate more efficiently.
  • **Instant rollback**: Supports instant rollback of operations such as regular card playing, potion use, potion discarding, and ending rounds.
  • **Selection interface support**: The undo function can also be used in the "select a card" and hand selection interfaces.
  • **Flexible reselection**: In certain card selection scenarios, you can even choose a different option after undoing it!

⚠️ Unsupported functions

Please note that this module focuses on the rollback of operations in combat, and the following content is **not supported yet**:

  • Undoing of maps, events, shops, bonfires or post-battle bonus phases.
  • Multiplayer.
  • Undo history preservation across game restarts.
  • Interactive flow using only controllers.

📥 Download and Installation

download

  • 👉 Go to the release page to download the latest version
  • The release package usually contains two files: `UndoTheSpire2.dll` and `UndoTheSpire2.json`.

Installation steps

  • **Get files**: Download the release package, or build the module yourself to get `UndoTheSpire2.dll` and `UndoTheSpire2.json`.
  • **Place Files**: Place these two files into the game's `mods` folder.
  • **Clean up old files**: If you have an old version of the `UndoTheSpire2.pck` file, please delete it first.

🎯 How to use

The operation is very simple, you can choose:

  • **Mouse Click**: Left-click the HUD button to **`Undo`**, right-click to **`Redo`**.
  • **Keyboard Shortcuts**: Use `Ctrl+Z` to undo, `Ctrl+Y` to redo.
  • **Hover Tip**: Hover your mouse over a button to see recently available undo/redo actions.

📝 IMPORTANT NOTE

  • **Original Design**: This mod focuses on providing practical rollback functionality for common single-player combat mistakes, and **is not** a commitment to support all future card, potion, or selection types.
  • **Potential Issue**: Some complex option flows, effects, or animations may still exhibit unexpected behavior.
  • **Problem Feedback**: If the rollback results in an incorrect state, please report the specific cards, potions, relics, and reproduction steps, which will greatly help troubleshoot the problem.

🐛 Feedback and Log

When submitting a bug report, investigation will be much easier if you include the following information:

*The specific cards/potions/relics involved.

  • Detailed reproduction steps.
  • Game log files.

Game logs are usually located at:

`C:\Users\YourUserName\AppData\Roaming\SlayTheSpire2\undo-the-spire2`

🙏 Acknowledgments

Special thanks to the following projects and resources for providing inspiration and technical reference:

  • Undo the Spire (STS1)
  • ModTemplate-StS2-master
  • sts2-quickRestart-main
**Disclaimer**: I am not the author of "Undo the Spire 1". This module is an original independent project for "Slay the Spire 2" and was completed with the coding assistance of Codex.

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. There is no universal mod manager for this game: some mods replace game files directly, some go into a game-specific Mods folder, and some need a game-specific community loader or tool first — follow the bundled readme.
  3. Place the files exactly as the readme says; mods with listed dependencies need those installed too.
  4. Launch the game to confirm it loaded; some games require enabling mods in settings or an in-game mod menu.

Install locations vary a lot between games and mods — the bundled readme is the most reliable guide.

File & checksum

Filename
Undo The Spire 2
File size
267.5 KiB