The Animal Crossing Pattern Tool 8.0

Welcome, to the so far layoutless website *ahem* of the Animal Crossing Pattern Tool!
I'm your host, Thulinma, good evening.

So, what the hell is this tool, you ask?
Well, you probably know there already are tools for converting images into patterns.
All these tools have 1 problem, though: you need to manually input them in your game.
This is where my tool comes in: it can not only convert any picture into a pattern file, it can also input them directly into your ACWW savefile!
Still, that is not all! It can also import/export .acww pattern files, so you can share your creations with your friends.


Everyone likes screenshots :-)
The main program, after selecting a savegame The main program, in edit mode, with some edits to the first pattern not yet saved.
The converter tool, just before saving


Click here to download the latest pattern tool (V8). It has these features:
  • Convert pictures into .acww files
  • Choose a name for the converted pattern
  • Choose town/creator name for the converted pattern (some restrictions)
  • Show all in-savegame patterns
  • Edit in-savegame patterns and pattern names directly
  • Import/Export .acww pattern files into/from your ACWW savegame (US/EUR version)
  • View .acww files
  • Do all these with the patterns of player 1, 2, 3 and 4, the able sisters, the town flag, blanca faces and even things your villagers are wearing right now!
  • View savegame raw data
  • View player 1's letters in the inventory.
  • Import/Export .ltr letter files of player 1.
  • View and edit Bulletin Board messages of your town.
  • FAQ

    Q: Does this work with M3 .dat files too?
    A: Yup, sure does.

    Q: Any chance for a MKDS version?
    A: Maybe. I've tried looking for the right values in the savegame, but it seems to be encrypted some way. if anyone has info about the encryption, please contact me (email address below).

    Q: Do you have some .acww files for us to play around with?
    A: Sure. Here's a link. Note: These patterns were taken from the pattern database. Credit goes to the original creators!

    Q: Do you have a copy of the special nintendo letters?
    A: It's the reason I made the letter editor. Here's a link. This zip includes the Iwata newyear letter, the nintendo europe easter letter, and the nintendo usa easter letter. All unopened, ofcourse ;-)

    Q: How do I get my savegame in a file, if I do not have a M3/G6/etc?
    A: Either use the Action Replay backup function, or if you can launch homebrew use RAIN to backup it to a CF card. Sorry, people without a (savegame) backup device cannot use this.

    Help me

    If you want to help make this tool better, these are the things you can do:
  • I don't know all the characters yet. If you see a ? in the name of your pattern/creator/town, please send the .acww file to me, and include what character the ? should have been.
  • I don't know how the creator name / town are encoded into the ID yet. Some test data may help. Please send .acww files with unique creator/town names to me.
  • I don't know what the "unknown" value is. Every pattern seems to have a different one. Suggestions are welcome.

  • Please send info/tips to thulinma (at) xs4all (dot) nl


    Version 8.0 (13 Apr 2006):
  • It's now possible to set a creator town and name with converting patterns.
  • It's now possible to edit patterns inside savegames (no .acww files yet), and edit their names.
  • You can now import and export letters from the Player 1 "inventory" (.ltr files)
  • You can now change the "to" and "from" of letters into your own name.
  • Some minor bugfixes.

  • Version 7.1 (4 Feb 2006):
  • Added support for .duc files.

  • Version 7 (12 Jan 2006):
  • Added a few common characters that were missing.
  • You can now view/edit Bulletin Board messages of your town.
  • You can now view (no editing yet) the letters in player 1's inventory.
  • You can now view the raw data of the savegame, converted to a (mostly) readible format.

  • Version 6 (9 Jan 2006):
  • Now supports player 2, 3 and 4.
  • Filename for exporting/converting is now chooseable, defaults to a legal filename.
  • Player "inventories" are named after the player.
  • Added the following characters: heart, semicolon, all numbers, exclamation mark, dot.
  • Links

    Here are some other sites worthy of your visit:
    Animal Crossing Save Editing - A site with a lot of info, and some patterns you can use in the tool.
    Aibohack - Home of the ACWW Map Editor, also many thanks to him for helping me get the tool working right!

      Created by Thulinma