The largest server for Undertale, the game where you don't have to destroy anyone. Feat. sans undertale. Also feat. DELTARUNE!

Server for the Undertale and Deltarune Wiki. Talk about wiki editing, Undertale, Deltarune, and all related topics!

A community for the character Asriel from Undertale. Meet other Asriel fans, make friends, post art, obsess about him, and more! A server maintained passionately over the course of 6 years, and still going strong!

Undertale Yellow Fanserver. Coming back slowly to build more of a community besides Undertale, owned by Goobie, previous by Noxxy.

A sans vs sans game based in roblox, join the server if you want to discuss with others about the game or other things in general or if you have any questions feel free to ask!

A server dedicated to both Undertale, and Deltarune, including content related to them.

Welcome to Undertale Fractured Time! A RPG ROBLOX spinoff of the famous game Undertale, with a unique storyline.

Discord server for updates for Undertale MULTIPLAYER.

The unofficial Discord for Deltarune! Deltarune is an indie game by the creator of Undertale, Toby Fox.

Skelecord is an undertale themed emoji server with an accepting community, Kind staff, Easy to follow rules, And art! discord.gg/snowdin

Undertale RP: Eternal Souls is a Roblox roleplaying game mainly based around Toby Fox's 'Undertale'. Come and engage in our community Discord server! Find epic and various flavours of roleplays! Make new friends. Develop your own story, or will you destroy some others?

The biggest server for recreating Toby Fox music (including UNDERTALE and DELTARUNE) with all work open to the public! Active community and useful content for all musicians to enjoy. (This is a fan project that is not affiliated with Toby Fox or his team)