Undo the Spire 2

Undo the Spire 2 is an in-combat undo / redo mod for Slay the Spire 2.
It is not a full time-rewind system. The goal is to provide stable rollback for common misplays in single-player combat.

Features

• Multi-step  Undo / Redo during combat
• Always-visible HUD buttons
• Ctrl+Z / Ctrl+Y hotkeys
• Instant rollback for normal card plays, potion use, potion discard, and end turn
• Undo support for  Choose A Card and hand-selection screens
• In some card-choice cases, you can undo and pick a different option

Not Supported

• Map, events, shop, campfire, or post-combat rewards
• Multiplayer
• Persisting undo history across restarts
• Controller-only interaction flow

Download

• Go to the Releases page
• Release packages usually include  UndoTheSpire2.dll and  UndoTheSpire2.json

Installation

1. Download a release, or build the mod yourself to get  UndoTheSpire2.dll and  UndoTheSpire2.json
2. Put both files into the game's  mods folder
3. If you still have an old  UndoTheSpire2.pck from an older version, remove it first

How To Use

• Left-click the HUD button:  Undo
• Right-click the HUD button:  Redo
• Hotkeys:  Ctrl+Z /  Ctrl+Y
• Hovering the buttons shows the latest available undo / redo action

Notes

• This mod focuses on practical rollback for common single-player combat mistakes, not universal support for every future card, potion, or choice type
• Some complex choice flows, effects, or animations may still behave unexpectedly
• If rollback produces the wrong state, please report the exact card, potion, relic, and reproduction steps

Feedback

Bug reports are much easier to investigate if you include:

• The card / potion / relic involved
• Reproduction steps
• The game log

The log is typically located at:
C:\Users\YourUserName\AppData\Roaming\SlayTheSpire2\undo-the-spire2

Acknowledgements

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

• Undo the Spire (STS1)
• ModTemplate-StS2-master
• sts2-quickRestart-main

I am not the author of Undo the Spire 1; this mod is an original, separate project for Slay the Spire 2, created with coding assistance from Codex.