This is a complete replacement of the previous compiler and decompiler used by UndertaleModTool, adding support for most of the latest GameMaker features, and fixing most of the control flow bugs.

The most complete tool for modding, decompiling and unpacking Undertale (and other GameMaker games!) - UnderminersTeam/UndertaleModTool

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 can be found on …

The most complete tool for modding, decompiling and unpacking Undertale (and other Game Maker: Studio games!) - jeason1997/GMS-UndertaleModTool

It's worth noting that UndertaleModTool has different builds per release. The differences are as follows: Single file - the tool is only one executable, with all dependencies embedded within it. This does …

Downloads Both the latest stable release and the most cutting edge version can be downloaded from the table below! Note, that you can update to the bleeding edge releases at any time from within the …

The most complete tool for modding, decompiling and unpacking Undertale (and other Game Maker: Studio games!) - undeadf0x/UndertaleModTool-pride-edition-

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

The most complete tool for modding, decompiling and unpacking Undertale (and other GameMaker games!) - UndertaleModTool/UndertaleModTool at master · UnderminersTeam/UndertaleModTool

UndertaleModTool and its forks are open-source and licensed under GPLv3, so they can be used without credit, without needing to ask for permission. The Underminers team: made the original …