Journey with me to the Ruins, where I will enlighten you about this awesome Minecraft Mod. The Undertale Mod is a really awesome mod that adds tons of Undertale characters into your Minecraft game. Not only that, but it comes with it's own custom map for you to play through. This mod adds Papyrus, Sans, Undyne, Alphys, Mettaton, Mettaton EX, Toriel, Napstablook, Temmie, and of course, Flowey to your Minecraft. Embrace the Genocide route and kill them for awesome items and weapons. Download the mod here:.