How do I put a mod on Undertale?

You wish spice up your adventure on Undertale ? Mods can be a solution!

Don't forget that it is possible to put Undertale in French.

Whether it's changing the gameplay or adding a multiplayer mode, I'll explain it to you. how to install a mod on Undertale and where to find them.

Tip: I recommend keeping a copy of the original "data.win" file before modding Undertale. By using a clean copy, you can easily update the mod and remove it from the game without having to reinstall anything.

1. Install Delta patcher

Mods are add-ons that allow you to modify a game's dialogues, gameplay, or textures.

Please note that some mods for Undertale use the file extension ".xdelta" and you will need to install the following software: Delta Patcher.

Remark : Some mods already have Delta Patcher built in. For others, you'll need to install Delta Patcher as mentioned above.

2. Installing a mod for Undertale

By using mods on Undertale, you can make the game more interesting even after finishing it.

Follow these steps to put a mod on Undertale :

1. Locate the "data.win" file. of the game via Steam.
   • Go to your Steam Library.
   • Make a right click on Undertale.
   • Click on “Manage” then “Browse local files”.
   • Once you have located "data.win," set this window aside.

2. Launch Delta Patch.
3. In “Original File“, select "data.win" in your Undertale folder.
4. For “xDelta patch", just select the Undertale mod with the ".xdelta" extension.
5. To finish, click on "Apply patch" to modder Undertale.

By following these steps correctly, your game Undertale is modded.

Remark : If your mod is not an ".xdelta" file, but a data file, it will be easier to install. To do this, simply replace the "data.win" file in the Undertale folder with the one from the mod.

3. Find mods for Undertale

Now that you know how to put mods on Undertale, it's important to know where to put them. take mods without risk for your game.

Among the possibilities, GameBanana is one of the most popular sites for downloading Undertale mods.

To install safe mods, we recommend that youinstall those with the most :

• Of comments,
• D'evaluations,
• Of downloads,
• etc

Plus one mod Undertale is highlighted by players, the less likely it is to be a virus.

Is there a mod multiplayer on Undertale?

Yes, it is quite multiple players possible on Undertale, provided that the appropriate mod is installed.

The best known is the mod Undertale Together for 2 players.

Remark : This mod multiplayer for Undertale only works if you have purchased the game on PC and Xbox.

Here are the steps to follow install mod Undertale Together on PC :

1. Download Undertale Together.
2. After extracting the file, do a double-click on SpaghettiInstaller.exe.

3. Then follow the installation process.

4. At the time of select the installation folderThe application will automatically detect Undertale on Steam on your PC.

5. Then check that the mod multiplayer on Undertale by launching the game.

Now you know how to put a mod on Undertale and where to find one in complete safety! You'll also know how to play with two players, thanks to the multiplayer mod.

You can also consult our complete guide to boss if you need help dealing with them.