#How to make a rom hack for undertale mod
#How to make a rom hack for undertale update
#How to make a rom hack for undertale manual

RoomOfDetermination: Adds a new room to Undertale 1.08.

You will need to track down all the font files yourself, I can't host them here for licensing reasons :(

TTFFonts: Makes the game load fonts in TTF format from current directory instead of using the spritesheet fonts.

testing: nothing important, just displays random text on the main menu - the first script I ever made.

BorderEnabler: lets you import the PlayStation exclusive borders into the PC version and patches all version checks so that they display properly.

DebugToggler: similar to the above, but instead toggles the debug mode on and off with F1.

If you don't know about Undertale's debug mode, check out this write up of Undertale's Debug Mode

EnableDebug: does just that, makes the global variable 'debug' be enabled at game start.

Scripts to batch import and export various types of asset files.

Search: Simple search for text in decompiled code entries.

#How to make a rom hack for undertale mod

Here are some screenshots of what UTMT can do: Undertale: Bits and Pieces Mod yydebug file for the GM:S debugger so that you can edit variables live! (see here)

All core IO functionality extracted into a library for use in external tools.

It also serves as a replacement for sharing hex editor offsets - if you make it into a file-format-aware script instead, there is much smaller change of it breaking after an update.

#How to make a rom hack for undertale manual

Support for running scripts that automatically modify your data file (or perform other nefarious tasks) - this is the way to distribute mods, but creating them is a manual job for now.

The output is accurate (except for the latest GameMaker versions), but it could use some more cleaning up of the high-level structures. This means you can add any custom code to the game, either using the built-in GML compiler or GML assembly.

Allows for code disassembly and editing.

An editor which lets you change (almost) every single value, including unknown ones.

Properly handles all of the pointers in the file so that if you add/remove stuff, make things longer/shorter, move them around etc.

Can read every single byte from the data file for lastest version of Undertale, Deltarune, and most other GameMaker: Studio games (GM:S 1.4 and GMS2 bytecode versions 13 to 17 are currently supported) for every platform and then recreate a byte-for-byte exact copy from the decoded data.

Choose this if you don't care about finding the right executable in-between of ~300 dll's, or if the stability issues from the Single file build affect you.

Non-single File - all dependencies are not embedded within the executable, but are now located right next to it.

This does make your folders cleaner, however it also causes some unexpected stability issues.

Single file - the tool is only one executable, with all dependencies embedded within it.

NET bundled, so you don't have to worry about installing the necessary runtime. NET runtime version needed to run the tool alongside it. It's worth noting that UndertaleModTool has different builds per release.

#How to make a rom hack for undertale update

Note, that you can update to the bleeding edge releases at any time from within the settings menu of UndertaleModTool. I heard you like digging deep into GameMaker games like Undertale/Deltarune, so here's a tool just for you!Д«oth the latest stable release and the most cutting edge version can be downloaded from the table below! (seeing such an amazing tool fills you with DETERMINATION.)