WAD Files

When a GameMaker game is compiled and distributed, all of the game's logic and most of its assets are stored in a WAD ("Where's All the Data?") file. The default name for the WAD file will change based on what operating system the game was compiled for.

Operating SystemWAD File Name
Windowsdata.win
Linuxgame.unx
macOS / iOSgame.ios
Androidgame.droid

Note that the WAD file is not the .exe file, which also usually exists in the same directory where the WAD file is.

The default location of the WAD file depends on which operating system the game was downloaded on.

UNDERTALE

The following are the default WAD file paths for UNDERTALE if it was installed through Steam:

Operating SystemDefault UNDERTALE WAD File Path
WindowsC:\Program Files (x86)\Steam\steamapps\common\Undertale\data.win
Linux~/.local/share/Steam/steamapps/common/Undertale/assets/game.unx
macOS~/Library/Application Support/Steam/steamapps/common/Undertale/UNDERTALE.app/Contents/Resources/game.ios

DELTARUNE Demo

The WAD files for the DELTARUNE demo can be found in the following places if installed through Steam:

Operating SystemDefault DELTARUNE Demo WAD File Path
WindowsC:\Program Files (x86)\Steam\steamapps\common\DELTARUNEdemo\data.win
macOS~/Library/Application Support/Steam/steamapps/common/DELTARUNEdemo/DELTARUNE.app/Contents/Resources/game.ios

DELTARUNE

Instead of having all of DELTARUNE's logic in one WAD file, the purchasable release of DELTARUNE contains a Chapter Select WAD file (found in the "root" directory) and then individual WAD files for each chapter. The default DELTARUNE root directory is as follows:

Operating SystemDefault DELTARUNE Root Directory
WindowsC:\Program Files (x86)\Steam\steamapps\common\DELTARUNE\
macOS~/Library/Application Support/Steam/steamapps/common/DELTARUNE/DELTARUNE.app/Contents/Resources/

The root directory also contains folders for each chapter, with each folder containing the respective WAD file for that chapter. The folders are named as follows, with X representing the chapter number:

Operating SystemDefault DELTARUNE Chapter Folder Name
WindowschapterX_windows
macOSchapterX_mac

For example, a Windows installation with the first five chapters installed might look like the following (with irrelevant files and folders discarded):

.
.
└── DELTARUNE/
    ├── chapter1_windows/
    │   └── data.win
    ├── chapter2_windows/
    │   └── data.win
    ├── chapter3_windows/
    │   └── data.win
    ├── chapter4_windows/
    │   └── data.win
    ├── chapter5_windows/
    │   └── data.win
    ├── data.win
    └── DELTARUNE.exe