Undertale Music Player

3.8(5)

Undertale

Bad Time Simulator

Undertale Sans Fight

Endless Sans

Sans Fight Simulator

Mouse Control Bad Time Simulator

Gaster Fight

Bad Time Trio Simulator OG 2 Player

Swift Bad Time Trio

Undertale Last Breath

Lucas Battle

Sir Kain Battle

Swap Time Trio

Bad Time Simulator Horrortale

Horrortale Sans Fight

Inktale Sans 2-Player Battle

Underfell Sans Fight

Friday Night Funkin vs Sans

AU Trio Fight

Super Mario Bad Time Duo

Deltarune

Jevil Fight

Berdly Fight

Queen Fight

Jevil Fight 2-Player

Undertale Music Player | Complete Underground Soundtrack Collection

Released:August 21, 2025

Undertale

🎵 Music Discovery: Press letters A-Z and numbers 1-3 to play different Undertale tracks

⏹️ Music Control: Press spacebar to stop all playing music

🎮 Simple Interface: Clean, intuitive controls for seamless music exploration

💫 Track Variety: Discover boss fights, area music, and character themes

Undertale Music Player - Complete soundtrack collection interface

Access the complete Undertale soundtrack with simple keyboard controls! Press any letter A-Z or number 1-3 to discover different tracks from the Underground. Every key unlocks a unique piece of Toby Fox's masterful composition.

Keyboard-Based Music Discovery

This player transforms your keyboard into a musical instrument for exploring Undertale's soundtrack:

29 Original Undertale Tracks

Experience the authentic Undertale soundtrack through 29 carefully selected pieces. Each key press reveals a different track, from the opening Once Upon a Time to the climactic finale. The complete collection spans the entire game journey, letting you revisit memorable moments through music.

Organized by Game Progression

Tracks are organized to reflect your journey through the Underground:

•Boss encounters: Megalovania, Bonetrousle, Spear of Justice, ASGORE, Finale
•Area exploration: Ruins, Snowdin Town, Waterfall, Hotland, New Home
•Character interactions: sans., Dating Start!, Spider Dance, Death by Glamour
•Story moments: Once Upon a Time, His Theme, Hopes and Dreams, Undertale

Navigate through the Underground's musical landscape and rediscover the soundtrack that defined an entire generation of gamers.

Personal Music Collection Tool

Use this player as your personal Undertale music library. Test different combinations, find your favorite tracks, and share discoveries with other fans. Whether you're seeking the perfect background music for studying or wanting to relive specific game moments, this tool provides instant access to the complete Underground experience.

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Ready to Explore the Underground's Musical Depths?

Start Playing Music

Undertale Music Player

Undertale Music Player | Complete Underground Soundtrack Collection

Game Overview

Keyboard-Based Music Discovery

Ready to Explore the Underground's Musical Depths?