Church (Castle Town)
The church[1] is a building in Castle Town. It appears in Chapter 5 of Deltarune. The rooms within are stylized after the Dark Sanctuary.
In Chapter 5, the church appears if enough Chapter 4 Darkners were recruited from Dark Sanctuaries. Various activities can be found in the church, such as trading S.POISONs for S.POTIONs, another climbing challenge with different cutscenes on the top depending on the time, and a playable organ with different sound effects.
Right past the entrance, Tasque Manager can be seen in church wear, praying for extra fire damage for her cats, and all cats in general. Tasque prays for Maus to get smashed with a giant cartoon mallet, while Maus prays for "Good cheeses".
A Wafer in this area can turn all S.POISONs in the inventory and storage into S.POTIONs if asked to "Cure Poison". If asked to "Raise Dead", they summon Gueis and blue fire from around the screen. Two Organikks nearby produce noises and change color when interacted with.
Sweet and K_K can be found on the east side of the church, hosting a playable organ with various sound effects corresponding to main characters and recruits. Sweet admits they broke the organ but can play the notes for the party instead, whereas K_K gives information about the current sound effect. Sweet plays the higher octave, whereas K_K plays the lower octave of the organ.
| Sound effect | Character |
|---|---|
| Piano | Kris |
| Rock Guitar | Susie |
| Choir | Ralsei |
| Music Box | Noelle |
| Violin | Rudinn |
| Bass | Hathy |
| Acoustic Guitar | Clover |
| Sine Whistle | Rabbick |
| Splat | Lancer |
| Snare | Ponman |
| Bass Drum | Bloxer |
| Hi Hat | Jigsawry |
| Square Wave | Sweet |
| Saw Wave | Cap'n |
| Noise Wave | K_K |
| Tamborine | Tasque Manager |
| Synthetic Meow | Tasque |
| Bongo | Maus |
| Pulse Wave | Virovirokun |
| Triangle Wave | Ambyu-Lance |
| Crash Cymbal | Swatchling |
| FM Bass | Werewire (possibly) |
| Steel Drum | Poppup |
A climbing minigame similar to the one in Dark Sanctuary can be found going through a door in the middle of the church. Unlike in Dark Sanctuary, the climbing segment is longer and a timer appears once the climb starts. A Cuptain at the bottom tracks how long has Kris spent climbing the segment, and different cutscenes happen at the top depending on the time achieved.
| Climbing time in seconds | Condition | Flavor text |
|---|---|---|
| No Starwalker, first climb | Rouxls and Ralsei appear on the top.
| |
| No Starwalker, subsequent climbs |
Ralsei appears at the top, dressed depending on the option chosen in the previous cutscene.
| |
| Have Starwalker, first climb | Rouxls, Ralsei and Starwalker appear at the top.
| |
| Have Starwalker, subsequent climbs | Starwalker appears at the top.
| |
| - | Icon Man appears at the top.
| |
| - | Shadowguy appears at the top. scream.ogg plays. | |
| First climb | Rouxls appears at the top.
| |
| Subsequent climbs | Rouxls appears at the top.
| |
| First climb | Rouxls and a Mizzle appear at the top.
| |
| Subsequent climbs |
Rouxls and a sleeping Mizzle appear at the top.
|
If a trophy has been obtained, a little display will appear on the left side of the bottom. There are currently two trophies that can be displayed; with the first trophy being in the Dark Sanctuary, by beating the climbing courses on the path to the PowerBand under certain times.
- ↑
In Castle Town's church, going to home screen and back crashes the game.
— @undertale.com on Bluesky, June 25, 2026. - ↑ gml_Object_obj_dw_church_organ_Create_0 script, Chapter 5
- ↑ All Climbing Easter Eggs [Deltarune Ch.5] on YouTube
- ↑ gml_Object_obj_dw_castle_church_climb_Other_19 script, Chapter 5