Nightreign Enemy Randomizer

# Nightreign Enemy Randomizer

A boss and enemy randomizer for Elden Ring: Nightreign. It shuffles the

enemies and Night Bosses placed across every map, so each seed plays

differently — Maliketh in a Giant Crab clearing, an Erdtree Avatar where

a Tree Sentinel used to be, a different Nightlord fight every run.

Current release: v0. 28. 1. For what changed, see `PATCH_NOTES.md`

(user-facing release notes) and `CHANGELOG.md` (full per-version

`INSTALL.md` has the full walkthrough. The short version:

1. Install Python 3. 10 or newer (on Windows, tick "Add Python to

PATH" during install) and set up a me3 profile for Nightreign.

2. Unzip this bundle anywhere.

3. Copy your game's Oodle DLL — `oo2core_*_win64.dll`, from the

Nightreign `Game/` folder — into the bundle folder.

4. Run `python check_setup.py` to confirm the environment is healthy.

5. Launch the GUI: double-click `oops_rando_gui.pyw`, or run

`python oops_rando_gui.py` from a terminal (use this one for

diagnostic output).

6. On the Generate tab, point "Nightreign install" at your NR `Game/`

folder (packed is fine — no UXM unpack needed) and "ME3 mod profile" at

your me3 package. The output dir and vanilla read-paths auto-fill (and

if you accidentally pick the package's parent folder, it descends into

the package for you). Click Randomize, then Install pre-patched EMEVD.

You do not need to UXM-unpack your install. The GUI reads vanilla map

and event data straight from your own Nightreign install's `.bhd`/`.bdt`

archives at run time — packed or unpacked, auto-detected — so this bundle

ships no FromSoftware game data. Point the GUI at your NR install and click

Randomize; the maps are pulled from the archives on the first run and cached

## What it does

- Enemy + boss shuffle. Every catalogued MSB enemy/boss slot can be

swapped. Marquee Night Bosses (Midra, Romina, Maliketh, Fortissax,

Metyr, and the rest) get a reservation floor/ceiling so they appear

reliably and at varied locations from seed to seed.

- Test-mode arenas (on by default). The 19 Night 1 / Night 2 boss

arenas run a minimal spawn template — boss spawns, you kill it, night

advances — so swapped bosses behave predictably in every arena.

Toggle off in the Diagnostic section for the full vanilla cinematic

experience. Augur (m47_70) always runs vanilla; its descent doesn't

fit the template.

- Oops! All modes. Replace every slot — or every Night Boss slot —

with a single chosen enemy. Switching into an Oops mode asks for

confirmation first.

- Cross-game imports. With MMV in your me3 profile, the target pool