Single-player games like Undertale
Below are 15 single-player Steam games similar to Undertale, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Undertale page.
Ranked picks
- 1
HELLEVATOR
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie and RPG with Undertale.
`·.¸¸.·´´¯`··._.·Welcome to the Hellevator·._.··`¯´´·.¸¸.·` Hellevator is a ballet hell (with an “a”) RPG. Your job is to deliver food to our most valued guest. How hard can that be?
- 2
The Sword That Kills Christmas
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie and RPG with Undertale.
On this journey your choices dictate everything. You might end up poisoning one of Santa's reindeers or trying to find your mom (you're an orphan) or something entirely different. Where will your path lead?
- 3
DELTARUNE
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie and RPG with Undertale.
Dive into the parallel story to UNDERTALE! Fight or spare your way through action-packed battles as you explore a mysterious world alongside an endearing cast of new and familiar characters. Chapters 1-4 will be available on launch, with more planned as free updates!
- 4
Astromeda
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares RPG with Undertale.
Astromeda is a story-driven RPG about a human returning to an Earth ruled by intelligent bacteria. Explore a mysterious world, meet strange and expressive characters, and fight through battles that blend turn-based combat with real-time action as you uncover the truth behind humanity's return.
- 5
Void of Lilly
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie and RPG with Undertale.
Void of Lilly is an adventure in the world of the near future with JRPG elements and Bullet Hell battles! Help Ann to find her sister and uncover secrets of this world... Void of Lilly is coming on Steam for free!
- 6
I Became a Cat
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie and RPG with Undertale.
You woke up as a cat, can you find a way to be human again?
- 7
Emily is Away Too
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie and RPG with Undertale.
Emily is Away Too is a brand new story featuring new characters and multiple different endings. Message your friends, surf the web and choose your path through this branching narrative.
- 8
Unlucky Seven
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie with Undertale.
Unlucky Seven will take you on a space walk and tell you a story about love, hate, and craving for human flesh.
- 9
moon: Remix RPG Adventure
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares RPG with Undertale.
Don't be a hero. Experience the love. Experience moon. moon is an anti-RPG steeped in story and character, mood and music.
- 10
In Stars And Time
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares RPG with Undertale.
Live with the ever-present burden of being trapped in a time loop only you can know about in this turn-based RPG. Create a better future for you and your friends. Find hope where there is none left. Pray to the stars and free yourself from time.
- 11
Pony Island
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie with Undertale.
Pony Island is a suspense puzzle game in disguise. You are in limbo, trapped in a malevolent and malfunctioning arcade machine devised by the devil himself. It is not a game about ponies.
- 12
Botanica: Earthbound Collector's Edition
Single-player alternative to Undertale — playable solo, no multiplayer required.
Play as both Ellie and Ian, two scientists stranded on Botanica. Can you save your friends and find your way home?
- 13
Kentucky Route Zero: PC Edition
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie with Undertale.
KENTUCKY ROUTE ZERO is a magical realist adventure game about a secret highway running through the caves beneath Kentucky, and the mysterious folks who travel it.
- 14
Inscryption
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie with Undertale.
Inscryption is an inky black card-based odyssey that blends the deckbuilding roguelike, escape-room style puzzles, and psychological horror into a blood-laced smoothie. Darker still are the secrets inscrybed upon the cards...
- 15
OneShot
Single-player alternative to Undertale — playable solo, no multiplayer required. Shares Indie with Undertale.
OneShot is a surreal top down Puzzle/Adventure game with unique gameplay capabilities. You are to guide a child through a mysterious world on a mission to restore its long-dead sun. The world knows you exist.