MysteriousEggRoom

v1.2.5·Updated 2026-07-30

Adds DELTARUNE's egg room as a door-opening event to ULTRAKILL

About this mod Author’s original text

should actually work now

adds the man-behind-the-tree/egg room from deltarune.

by meticulouslyrare

has two modes:

-standard (default): one valid door is randomly chosen to trigger the teleport event

-deltarune mode (selectable in config menu): have to constantly fully open over and over again the same door to trigger the teleport event.

you get an extra 1000P if you manage to carry the egg to the end of the level it spawns in.

How it works (Standard Mode):

-Scans the whole level for a valid door

-If a valid door is found, it then rolls for a random chance for that door to trigger the teleport event only once in that level.

Info: Fully configurable. Might fail (depending on the map, for eaxmple, if the map has no valid doors, it will not work)

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

BepInEx-BepInExPackEternalsTeam-PluginConfigurator

File & checksum

Filename
MysteriousEggRoom-1.2.5.zip
File size
1.8 MiB