Home

For the tracks of the same name, see Home (soundtrack) or Home (Music Box).

Trapped behind the barrier and fearful of further human attacks, we retreated.
Far, far into the earth we walked, until we reached the cavern's end.
This was our new home, which we named...
"Home."

A book found in Toriel's Home

Home (JP: ホーム) is the first city of monsters founded in the underground after the war ended and monsters were trapped behind the barrier. Home was later abandoned when monsters moved into New Home. Home can be seen from a room near the end of the Ruins. The city is inaccessible to the protagonist, but a nearby Froggit mentions that Toriel was last seen bringing groceries from it to make a butterscotch-cinnamon pie.

The Toy Knife can be found on the balcony overlooking Home.

Home is referenced on an ancient tablet in Waterfall's crystal maze room. It implies that monsters used to traverse in and out of the Ruins capital. However, the Ruins exit can only be opened from the inside. If the door is closed, it is stated that only a ghost or someone who can burrow can freely traverse in and out of the area.

Outside of Undertale

PlayStation 4

Home is featured as a dynamic theme for the PS4 version of Undertale, named "Ruins". In contrast to Home's in-game appearance, it features Waterfall's light blue stars overhead, and the Before the Story track by Toby Fox.

10th Anniversary Stream

Home as seen in the UNDERTALE 10th Anniversary Stream.

Home, referred to as Old Home, received an expansion in the UNDERTALE 10th Anniversary Stream. The overlook received an eastern walkway leading to a town square. The Toy Knife was relocated to one of the houses in the town. The stream hosts briefly visited this town before continuing on the main path.

At the end of the True Pacifist Route, Old Home was visited again. Gerson was seen and talked to in the house that contained the Toy Knife.