How to Use the Spamton Save Editor (Step by Step)

Before you start

Two minutes of prep turns every possible mistake into a non-issue.

Back up the whole save folder. Copy the entire DELTARUNE save folder to your desktop or another safe spot before you change anything. One spare copy is the difference between a ruined save and a ten-second restore.
Fully close the game. Deltarune rewrites its save files from memory while it runs. If the game is open when you swap files, it can silently overwrite your edited file with the old data.
Consider pausing Steam Cloud. Steam Cloud can notice the file changed and helpfully restore the older cloud version right over your edit. Pause syncing for Deltarune, or do the file swap with Steam in offline mode.
PC, Mac, or Linux only. This editor works with the full-release save files on computers. Consoles give you no access to the raw files (a Switch needs homebrew such as JKSV), and demo saves use a different, unsupported format.

How to use the save editor, step by step

The whole round trip takes about five minutes, most of it spent finding the folder.

Find your save file

On Windows the folder is %LOCALAPPDATA%\DELTARUNE; on macOS it is ~/Library/Application Support/com.tobyfox.deltarune/. Files named filechN_0, filechN_1, and filechN_2 are your three SAVE slots — N is the chapter number, so filech3_0 is Chapter 3, slot 1. The save file location guide has per-OS walkthroughs, including Linux and Steam Deck.
Open the editor and drop the file in

Open the save editor and drag the file onto the drop zone (or click to browse). Your browser reads it locally with the FileReader API — nothing is uploaded anywhere. Chapter and format are detected automatically: Chapter 1 saves are 10,318 lines, Chapters 2-4 share a 3,055-line format.
Pick a tab and edit values

Basics covers money, LV, play time, and plot progress. Party holds HP, stats, equipment, and spells. Inventory edits your pockets, key items, and the 72-slot storage box. Light World and Advanced round it out — Advanced is where the raw flag browser lives. Dropdowns show real item names, not raw numbers.
Download the edited file

Hit the download button. The editor validates your save before writing and produces a clean file with the correct line count — no half-written lines, no missing values.
Replace the original file

Copy the downloaded file back into the save folder, keeping the exact original filename: filech3_0 stays filech3_0. The game decides which slot to load from the filename alone, so renaming it means your edits never show up. Overwrite the old file — your backup already has the original.
Launch the game and load the slot

Start Deltarune, pick the chapter, and load the slot you edited. Check that your changes landed. If anything looks off, quit without saving and restore your backup copy.

Popular edits to try first

Four quick recipes once your save is loaded in the editor.

Max out your money

Basics tab → Money (gold) field → type whatever you want → download. Walk into every shop already rich, or set it to zero for a challenge run.

Full-heal the party

Party tab → for each character, set HP equal to Max HP. Instant full heal before a boss, without burning through your consumables.

Grab both Spamton NEO rewards

In a Chapter 2 save: Inventory tab → add the Dealmaker (armor #21) and the Puppet Scarf (weapon #21) to your storage box, or equip them directly from the Party tab. The Spamton save editor guide walks through it.

Rescue a broken save

If a crash or a bad manual edit truncated your file, just load it: the editor auto-repairs line-count mismatches within a small margin and writes back a full-length save. Load the repaired file in game and double-check your progress before playing on.

Why won't my edited save work?

If the Deltarune save editor "did nothing," one of these six culprits is almost always responsible.

You edited the wrong slot

filech2_0 is slot 1, _1 is slot 2, _2 is slot 3. If you edited _0 but you actually play on slot 2, your edits landed in a different save. Match the file number to the slot you load in game.

You edited a Completion FILE

Files ending in _3, _4, or _5 are Completion FILEs — chapter-clear records the game displays on the file select screen, not playable SAVE slots. Edit _0, _1, or _2 instead.

The game was open

If Deltarune was running when you replaced the file, it happily rewrites the save from memory and your edits vanish. Fully close the game before swapping files — check the taskbar or dock, not just the window.

Steam Cloud restored the old file

Steam can sync the older cloud copy back over your edited file as soon as you drop it in. Pause Steam Cloud for Deltarune (or swap the file with Steam offline), then re-copy and launch.

It is a demo save

The free Chapter 1 & 2 demo uses a different file format, and the editor rejects it. Only saves from the full Chapter 1-4 release are supported — if you started on the demo, start a file in the full game first.

Values out of range or bad item IDs

Absurdly large numbers, or item IDs that belong to a different chapter, can make the game misbehave or quietly revert your edit. Stick to sensible values and use the editor's dropdowns — they only offer IDs that are valid for your chapter.

Frequently asked questions

Is it safe to use a save editor on my Deltarune save?

Yes. This editor runs entirely in your browser: your save file is read with the FileReader API and is never uploaded anywhere. The only real risk is overwriting a file you still need, which is why step one is making a backup — with a backup, every edit is reversible.

Do I need to install anything?

No. The editor is a plain web page. Open it in any modern browser on Windows, macOS, or Linux, drop your save file in, and edit. There is nothing to download, no account, and no sign-up.

Does it work on a phone?

The editor itself is mobile-friendly and runs fine in a phone browser, so you can edit a save file anywhere. The catch is getting the file there and back: Deltarune's save files only exist on the PC, Mac, and Linux versions, so after editing on your phone you still need to move the file into your computer's save folder (a cloud drive or USB cable both work).

Can I undo an edit?

Yes — that is exactly what the backup is for. Copy your original file back into the save folder, overwriting the edited one, and the game is back to how it was. Without a backup there is no undo, so make the copy before your first edit.

Which chapters and save files are supported?

The full release, Chapters 1-4, on PC, Mac, and Linux. Chapter 1 saves are 10,318 lines long; Chapters 2, 3, and 4 share a 3,055-line format, so the editor detects the format automatically and works out the chapter from the filename, with a manual chapter switcher if the name is unusual. Saves from the free Chapter 1 & 2 demo are not supported.

How to Use the Deltarune Save Editor (Step by Step)