This 2015 indie RPG/Adventure game casts you as a child who falls into the Underground, a realm populated by banished monsters. The core loop involves navigating hostile environments, solving puzzles, and engaging in turn-based combat that uniquely blends traditional mechanics with "bullet hell" dodging sequences. Its distinctive feature is player agency: you can choose to fight or spare every enemy, with these choices fundamentally altering the story and world outcomes.
The atmosphere of the game is established immediately upon the protagonist's descent. Once sealed away, the monsters of the Underground have developed their own society. As the player guides the child through various distinct regions, they encounter these inhabitants. The narrative is driven by the choices the player makes regarding these encounters, shaping the journey toward the surface.
The gameplay blends several genres, primarily focusing on role-playing elements combined with unique combat scenarios. Exploration involves navigating environments that often require puzzle-solving to progress. Combat is fundamentally turn-based but features highly unconventional mechanics that deviate from standard genre expectations.
When engaging in battle, the game introduces elements reminiscent of "bullet hell" shooters, requiring precise movement and timing to dodge incoming attacks displayed as patterns on screen. Crucially, the game offers an alternative to traditional fighting:
The consequences of these choices significantly impact the story progression and the final outcome of the game.
The defining characteristic of this title is its emphasis on player agency and consequence, particularly within its combat system. The game actively tracks the player's approach to conflict resolution—whether they choose to engage violently or seek peaceful solutions—and reflects these decisions in the world, the characters' reactions, and the overall narrative structure. This system challenges conventional RPG tropes where combat is often mandatory.
This adventure is accessible on a wide range of modern and legacy platforms, including PC, Mac, Linux, and major consoles such as the PlayStation 4, Xbox One, and Nintendo Switch. The community reception generally highlights the narrative depth and the innovative approach to player choice within the RPG framework.
As a complete main game experience, there are currently no official downloadable content (DLC) packs or major expansions available for this title.
UNDERTALE! The RPG game where you don't have to destroy anyone.


Undertale Plus is a mod that allows you to have your own completely customized Undertale experience! Bringing all-console exclusive content of the original, with widescreen support, colored sprites, custom battle backgrounds, bug fixes, and many more with add-ons.

Silvatale is a high quality mod of Undertale. It replaces many songs and SFX with SiIvaGunner rips, amongst over small changes.

Christian mod with bible verses. Tells the true meaning of Christmas. Converts the game into a God-honoring adventure with the gospel. Revamps some of the story. Changes some sprites. Has two main endings - requires a second playthrough for the second ending (has sort of secret...? requirements to unlock). Most graphical changes are in the second playthrough. Interaction with objects and NPCS instead of rushing through the game is recommended.

Have you ever wondered what would happen if Kris fell into the Underground instead of Frisk? Introducing DELTATALE, an alternate world where just that happens! This mod is aimed at players that have played Undertale, Deltarune, or UT Yellow and are looking for a new experience that implements lore and various upgrades from these games!

Have you played Undertale Yellow? After completing it, did you think: "Man, I really wanna replay Undertale now, but I've already played it so many times..." No? WELL TOO BAD! Introducing: Undertale Red & Yellow! An Undertale mod designed to scratch that Undertale Yellow itch!

A mod of Undertale where you can play with two characters!

Undertale, but you have a gun and you can shoot things. It's like a mod called DELTAGUN but in UNDERTALE.

Desert Bus is a mod for Undertale that recreates the original game of Desert Bus with an 8 hour long room in Undertale.

UNDERTALE but you play as Niko from Oneshot!

Undertale: Bits and Pieces is a mod of Undertale featuring completely overhauled graphics, new areas, new enemies and remixed music, as well as backporting content from its successor Deltarune

A co-op mod of Undertale, with this mod you will be able to play the entire game with two players.