NyxLib

v0.4.0·Updated 2026-09-17

General Library for/used by mods made by Nixya/nyxpirientity. Probably not of much interest to you unless you're installing one of those

About this mod Author’s original text

Important!

For this plugin/mod to work, you'll need to ensure your BepInEx is configured to have HideManagerGameObject set to true, or else the game will destroy the plugin!

About

NyxLib is mostly a library I created for my own personal ULTRAKILL mods. It can technically be used by anyone, for any mods, but I, ESPECIALLY now, advise against it because I could change the API at anytime, as it's unfinished and also very probably not good. Fundamentally, this doesn't matter much for people to read up on, it's just a framework for me to make mods for ULTRAKILL.

It features things for convenience and organization for my mods, such as a small system to organize the composition of radiance, events for various gameplay events (Player events, enemy events, projectile events) and ways for those events to be cancelled whilst other mods using the library can tell if and why those events were cancelled, and even a system for dropping messages to the player. In general, it's just convenience related things for my mods.

There is no documentation at the moment.

Cheats

It features a few cheats, most exotic cheats are part of my other (many not released as I write this) ULTRAKILL mods, but I'll list what there is in this one here alongside some explanation/description. Cheats labeled optional can be enabled/disabled in the configuration file.

UTILITY:

  • Sand All Enemies - Just a convenience cheat for the sand all enemies command in the game (optional)
  • Force Next Wave - Tries to force the next cybergrind wave to occur. (optional)
  • Hide Cheats Enabled Status - Hides the cheats enabled status UI in the top left (optional)
  • Cybergrind Starting Wave Override - Allows you to override your cybergrind starting wave, being a cheat, this shouldn't be capable of saving as a highscore. (optional)
  • Immortality - Similar to invincibility, but you'll still take damage. You (usually) will not be able to go below 1 hp, however, certain instakill objects may still instakill you.
  • Radiant All Enemies - Does what it says- similar to forcerad, but it uses it's own configuration settings, configured in the config file. Why? Well, simply because the base ULTRAKILL radiance system was a bit too simplistic for my mods to combine from what I could tell, so I had to make a layer on top of it which simply takes in multiple radiance modifiers and compounds them together as either additives or multipliers. This may interfere with base game radiance IF anything is actually using it, but if no mods are using it, it should make no difference (in theory, but like, software has bugs and all of my mods add to be a big solo-unpaid-personal-project)

Options

  • Play Clean Music with Battle Music - tries to make the clean music track play with the battle music track, as in, at the same time

Note

It also features a feature named "Level Quick Loading" which loads levels at startup to allow mods to pick assets from those levels they may need. This causes startup to look a bit different, and can make it take longer. Frankly, I just don't know of a different way to do what I wanted lol

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-BepInExPack

File & checksum

Filename
NyxLib-0.4.0.zip
File size
170.7 KiB