Tool
UndertaleModTool
Browse and modify supported GameMaker data files, extract assets, and decompile or compile GML VM code. Includes room editing, scripted changes, a CLI, and the reusable UndertaleModLib library.
Requirements and limitations
- Supply a supported game data file such as data.win, game.ios, or game.unx. Stable 0.9.2.0 provides a 64-bit Windows GUI and CLI packages for Windows, Ubuntu, and macOS.
- GML VM code editing excludes YYC, and some language features remain unsupported. Building the reviewed source requires the .NET 10 SDK or later and recursive submodules; the GUI build requires Windows.
About this entry
- Type
- Tool
- Category
- Game analysis tools
- Relationship
- Foundation tool
- Targets
- Game
Sources reviewed
The description was reviewed against primary sources. This does not establish runtime testing, security auditing or verified compatibility.