A downloadable mod


Undertale NETPLAY is a online multiplayer mod for Toby Fox's UNDERTALE. With up to 8 players, you can explore the UNDERGROUND together without having to destroy anyone.

An official copy of Undertale (ver. 1.08) from Steam is required.

This is a proof-of-concept! There *will* be issues that negatively impact the experience!

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GameJolt

More information
Updated 1 day ago
StatusPrototype
CategoryGame mod
AuthorLandimizer
Tagsmod, Multiplayer, netplay, online, Undertale
Average sessionA few seconds

Download

Download
ut-netplay-0-1-1.zip 2 MB

Install instructions

1. - Extract the .zip file included in the download.
2. - Patch Undertale's "data.win" file with the included .xdelta patch using DeltaPatcher.exe or DeltaPatcherLite.exe.
3. - Merge the included "Undertale" folder from the extracted .zip with Undertale's Steam folder.
4. - Configure the .ini files inside of the "netplay" folder in Undertale's directory.