Undertale: Undertale Together Mod

A creative mod that introduces multiplayer co-op into the world of Undertale

Bring a Friend into the Underground

The Undertale Together Mod introduces cooperative multiplayer gameplay to the beloved indie classic, Undertale. This fan-made modification transforms the traditionally single-player journey through the Underground into a shared adventure, allowing two players to explore, battle, and make choices side by side.

Flexible Multiplayer Options

Undertale Together supports both local and online multiplayer modes. For local co-op, players can either share a single keyboard—each taking one half—or opt for a combination of keyboard and joystick inputs. This design caters to a wide variety of setups, making it accessible for friends gathered around one screen.

Online multiplayer is also supported, letting users connect with friends remotely. However, setting up online games can be slightly tricky, as it may require changes to antivirus settings, network configurations, or additional software. While these steps add complexity, they unlock the ability to share the experience with anyone, anywhere.

Unchanged Storyline, Enhanced Experience

The mod stays true to Undertale's charming storytelling and innovative gameplay mechanics. All the characters, branching paths, and distinctive combat system remain as endearing as in the original. What changes is the social dynamic—players must coordinate their decisions in dialogue, battles, and puzzles, which can lead to new, unpredictable outcomes. This creates fresh replay value for longtime fans and offers newcomers a way to experience Undertale for the first time in good company.

Community-Driven and Free

As a community project, the Undertale Together Mod is distributed free of charge. It is regularly updated by dedicated fans, with new features and bug fixes addressing the unique challenges of adapting the game to multiplayer. Users may encounter occasional technical glitches, but support and documentation are continually improving.

Installation and Compatibility

Installing the mod is relatively straightforward for those accustomed to modding PC games, but newcomers may need to follow detailed instructions. The mod requires an existing copy of Undertale for Windows and works with most versions of the original game. Some compatibility issues may arise if users have other mods installed.