TT Save Editor

A save editor for LEGO Batman: Legacy of the Dark Knight that runs entirely in your browser. Drop your save in, do useful things to it — set your studs, set your playtime, add collectibles, complete missions and objectives, change the Bat-signal, or roll the version stamp back so a save from a newer patch loads on an older build — then download it back. No hex-editing, no random executable from a forum thread. The file you drop in never leaves your machine; it's decrypted, edited and re-encrypted right in the page.

Everything reads in plain English: real in-game names for collectibles and objectives (not internal codes), settings shown as Done / Started / Available, and a "Your changes" summary that tells you exactly what you altered before you download. You can undo any edit any time, and back up your original with one click.

Use it here: https://tt-save-editor.vercel.app

Installation

Nothing to install. Open the editor, drag your save in, edit, hit download.

Your saves live in:

%LOCALAPPDATA%\Warner Bros. Interactive Entertainment\LEGO Batman - Legacy of the Dark Knight\SaveGames\steam{steamId}

(On Steam Deck / Linux the same folder is inside the game's Proton prefix under compatdata/<appid>/pfx/... Epic uses the same path with an Epic-id subfolder. The editor's "Where do I find my save?" panel has the exact paths.)

Drop SaveSlot_0_TT.sav (or whichever slot) into the editor. After downloading, put both the new SaveSlot_X_TT.sav and its matching BackupCopy_SaveSlot_X_TT.sav back into that folder, replacing the originals — the game checks the pair, so you must replace both. Back up the originals first (the editor has a one-click "Save a copy of my untouched original").

Prefer to run offline? The .zip attached to this mod page is a single self-contained index.html — double-click and it opens in your browser, no network required.

Self-host the source: clone the repo, run pnpm install && pnpm -C packages/core build && pnpm -C apps/web build, serve apps/web/dist.

Main features

Pick a goal, not a panel. After your save loads, choose what you're here for: Fix my save · Unlock & complete everything · Fill in what I'm missing · Edit anything. A status bar always shows your save loaded OK, your collectible completion %, a one-click back-up, and Revert all changes.

Fix the version lockout. Sets the build-version stamp back so a pre-patch build accepts the save — the fix for "This save was created on an updated version of the game." Type the older build's number, or hand it a save that already works and it reads the number for you.

Add collectibles and watch the counters move. Add gold bricks, Riddler trophies, MicroBuilds, WayneTech chips, vehicles, costumes, stud caches, bat tokens, red bricks and all 41 challenges — browse by Category / Mission / District, or "Max out everything." Every item shows its real in-game name with the district decoded (e.g. Old Gotham South — Red Brick #1). You can also remove anything already in your save (the ✕ next to it).

Complete the challenges and actually hit 100%. Challenges you never reached aren't stored in the save at all, so older tools couldn't finish them — the editor now adds them, so "Unlock everything" reaches genuine 100%.

Every mission & objective in the game — not just the ones in your save — with objectives nested under their mission. Unnamed entries read as Objective 2 (part C) / Story mission 0-4, never raw tag paths. Repeated activities (six "Killer Croc — Gotham Village", etc.) are grouped into one expandable row with a Complete all button, and each activity's 100%-completion marker folds in as a "Counts toward 100%" row.

Skip ahead: "Mark this mission and all earlier story missions done" rebuilds a corrupted playthrough up to a chosen point in one click.

Studs, Playtime & WayneTech chips quick-edits at the top (studs writes the wallet the game actually reads; playtime takes a plain H:MM:SS; chips fill up to any number you set).

Change the Bat-signal in the sky without switching chapters — a "Bat-signal style" picker in the Edit view.

Every discrete setting as a friendly dropdown — difficulty, mission/objective state, collectibles (grouped by their real category, with real names), shops, upgrades, characters, and more — with plain-language values. Bulk "set all" with a confirm step on destructive changes.

Advanced view exposing every raw value in the save by name, for anything that isn't a friendly editor (with inline validation and a clear caution).

"Your changes" summary lists everything you altered vs the save you opened, before you download.

Always writes both SaveSlot and BackupCopy. The save you drop in never leaves your computer.

Known limits (as of v1. 0. 0)

Collectible catalogues are validated;