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The most complete tool for modding, decompiling and unpacking Undertale (and other Game Maker: Studio games!)

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XDOneDude/UndertaleModToolCE

 
 

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UndertaleModTool Community Edition

A fork of UndertaleModTool with a lot of features for Pizza Tower modding and stuff.

Features

  • A tile editor
  • Can open gml_Object_obj_player_Step_0
  • Anonymous function support
  • Self call support (self.func())
  • Automatic selection/creation of instance layers and grid snapping when dragging objects into rooms
  • Button to add creation code to rooms and objects in rooms
  • Room editor improvements: middleclick-drag scrolling, scaling objects by dragging their edges, easy creation of creation code, and more
  • Many other compiler/decompiler fixes and features
  • And more to come in the future!

Download

There are a few ways to get UTMTCE:

  • 1: Download the current release build from GameBanana
  • 2: In v0.5.5 and above, go to Settings -> Download latest dev build to update to the latest dev build (GitHub commit, I don't know why we're calling them dev builds).
  • 3: Get a dev build from Github Actions artifacts (requires a GitHub account)
  • 4: Compile it yourself; the steps are the same as in vanilla UTMT

Credits

UndertaleModTool and its forks are open-source and licensed under GPLv3, so they can be used without needing to ask for permission, with required credit (and source code, which is right here).

  • The Underminers team: made the original UndertaleModTool
  • CST1229: "Lead programmer"; most changes and features, application icon
  • FlashNin: Repository owner
  • Authors of forks (that weren't already merged into vanilla UTMT):
    • AwfulNasty: Room editor changes
    • SrPerez: Additional GML functions, inspiration for struct support

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The most complete tool for modding, decompiling and unpacking Undertale (and other Game Maker: Studio games!)

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