Undertale Mod for MCPE (Minecraft PE Add-on)

The description of Undertale Mod for MCPE (Minecraft PE Add-on)

Undertale mods for Android usually point here: the Undertale Mod for MCPE is an add-on for Minecraft Pocket Edition that drops Sans, Papyrus, Gaster and other Undertale characters into your Minecraft world. It is not the actual Undertale game. That game has no official Android release, so what you install here is a Minecraft add-on that runs on top of Minecraft PE, not Toby Fox's original. Every file on this page is checked for malware and installed on a real Android device by our editors before it goes live, we have done this since 2018.

Two things to know first: you need Minecraft Pocket Edition already installed, and this pack adds characters and encounters, not a separate game you launch on its own.

What is the Undertale Mod for MCPE?

The Undertale Mod for MCPE is an add-on for Minecraft Bedrock, the Pocket Edition version. It adds Undertale characters as mobs inside Minecraft: Sans, Papyrus, Gaster, Undyne, Toriel and Flowey among them. Walk up to one and it reacts, some characters speak with on-screen lines, and recognizable Undertale music plays during certain encounters.

The pack also swaps a few in-game items and weapons for Undertale-themed ones, so the world feels closer to the game the mob designs come from. It is a fan-made add-on, not an official Undertale or Minecraft release.

Characters and how they behave

Most of the pack is built around boss-style characters, each with its own attack pattern. Here is what the main ones do in a fight:

The names above use the canon Undertale spellings: Sans, Papyrus, Gaster, Chara and Frisk, not the garbled versions some copies of this add-on show.

Sans mode and commands

The add-on includes a Sans mode, where your character takes on Sans-style movement: quick dodging and an energy meter that drains as you avoid hits. It plays as a short skill challenge, not a full new game mode.

Some of the pack's features are triggered through Minecraft slash commands typed into the chat box, the same way you run any command in Bedrock. Treat that part as a reference: you enable the behavior you want and the add-on handles the encounter.

Requirements: you need Minecraft PE

This is the part to check before downloading. The add-on works only if Minecraft Pocket Edition (Bedrock) is already installed on your phone. On its own the file does nothing, it is content for Minecraft, not a standalone app.

You also need to turn on experimental features for the world you load it into, since the pack uses behavior-pack features. The download itself is small, about 2.6 MB, and it targets Android 4.0.3 and newer, so most phones that run Minecraft PE will handle it.

How to install the add-on

1. Tap the green Download button at the top of this page to get the .mcaddon or .mcpack file. It downloads directly, no registration or SMS.
2. Open the downloaded file. Your phone hands it to Minecraft, which imports the resource and behavior packs on its own.
3. Create or edit a world, then activate the Undertale resource pack and behavior pack in the world settings.
4. In the same world settings, turn on the experimental features the pack needs, then start the world.

New to add-on files? Our APK and add-on install guide walks through the same steps with screenshots.

Is this the real Undertale game?

No, and this is worth stating plainly. Undertale is a paid indie game made by Toby Fox, sold on Steam, Nintendo Switch, PlayStation and Xbox. There is no official Android version, so any "Undertale APK port" you see elsewhere is unofficial, and it is not something we host or point you to. If you want the real game, buy it on one of its official platforms to support the developer.

What this page offers is the Minecraft add-on: a fan-made way to bring Undertale characters into Minecraft PE, nothing more. For more of the same, try other Minecraft add-ons like Minecraft Pocket Edition mods and the Jenny Mod for Minecraft PE, or open the full apps catalog.