Undertale Wiki

Song That Might Play When You Fight Sans

314pages on
this wiki
Add New Page
Comments129 Share
For the actual track that plays when you fight Sans, see MEGALOVANIA.

"Song That Might Play When You Fight Sans" is the 72nd track in the Undertale Soundtrack. It is similar to a sped up version of the song "sans." This song is unused, and Toby Fox may have added it to the soundtrack to misguide players into believing that Sans would have a battle at some point in the Neutral Route.


  • This song is not in the game files.
  • Much of this song is made with instruments from the SNES version of Mega Man X3, particularly its iconic guitar sounds.
  • This song bears a striking resemblance to the final boss theme of Yoshi's Island: "Giga Baby Bowser."

Undertale Soundtrack
1 - 10 Once Upon a Time • Start Menu • Your Best Friend • Fallen Down • Ruins
Uwa!! So Temperate♫ • Anticipation • Unnecessary Tension • Enemy Approaching • Ghost Fight
11 - 20 Determination • Home • Home (Music Box) • Heartache • sans.
Nyeh Heh Heh! • Snowy • Uwa!! So Holiday♫ • Dogbass • Mysterious Place
21 - 30 Dogsong • Snowdin Town • Shop • Bonetrousle • Dating Start!
Dating Tense! • Dating Fight! • Premonition • Danger Mystery • Undyne
31 - 40 Waterfall • Run! • Quiet Water • Memory
Bird That Carries You Over A Disproportionately Small Gap • Dummy!
Pathetic House • Spooktune • Spookwave • Ghouliday
41 - 50 Chill • Thundersnail • Temmie Village • Tem Shop • NGAHHH!!
Spear of Justice • Ooo • Alphys • It's Showtime! • Metal Crusher
51 - 60 Another Medium • Uwa!! So HEATS!!♫ • Stronger Monsters • Hotel
Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything
Confession • Live Report • Death Report • Spider Dance • Wrong Enemy !?
61 - 70 Oh! One True Love • Oh! Dungeon • It's Raining Somewhere Else • CORE Approach • CORE
Last Episode! • Oh My... • Death by Glamour • For The Fans • Long Elevator
71 - 80 Undertale • Song That Might Play When You Fight Sans • The Choice • Small Shock • Barrier
Bergentrückung • ASGORE • You Idiot • Your Best Nightmare • Finale
81 - 90 An Ending • She's Playing Piano • Here We Are • Amalgam • Fallen Down (Reprise)
Don't Give Up • Hopes and Dreams • Burn in Despair! • SAVE the World • His Theme
91 - 100 Final Power • Reunited • Menu (Full) • Respite • Bring It In, Guys! • Last Goodbye
But the Earth Refused to Die • Battle Against a True Hero • Power of "NEO" • MEGALOVANIA
101 Good Night

Start a Discussion Discussions about Song That Might Play When You Fight Sans

  • Sans and So Sorry know each other???

    9 messages
    • Hello Guys!  Anyways, They both probably know each other, But dont consider themselves friends.  Yes,  He says that he kn...
    • So Sorry (and the amalgamates) can not be fought in the genocide route, so they as safe as the other monsters that ran away outside of Ch...
  • Random

    2 messages
    • '''I JUST REALIZED THAT ''Song That Might Play When You Fight Sans '' is a mix of Nyeh heh heh or Bonetrou...
    • It's that plus ''sans.''

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.