Source-checkedCreatures & NPCs

Nexus Bosses

by Deadpoolweid · for Factorio

Nexus is still transmitting. Nine bosses answer the signal: light a summon beacon, hold it, kill what comes, take its trophy. Nine trophies make the warp key.

20Downloads
16d agoLast updated
GPL-3.0License
Factorio Mod PortalSource

About Nexus Bosses

From Factorio Mod Portal

Nexus is still transmitting. Nine bosses answer the signal: light a summon beacon, hold it, kill what comes, take its trophy. Nine trophies make the warp key.

Nexus, the last planet of Nexus Extended Promethium Endgame, is still transmitting, and nine things on it answer the signal.

Nothing attacks Nexus on its own: no nests, no random raids. You build a summon beacon, choose the ground, raise the defences you think you need, and light it. Then something comes.

How it plays

Craft a beacon on Nexus and light it. While the countdown runs, the boss's precursors come for the beacon from the side the boss will take, so you see trouble coming. Hold the beacon, kill what arrives and take its trophy.

The signal grows in three stages, each with three bosses. Beat a stage and the next one opens. One trophy from every boss makes the warp key, and the key brings Silence: the signal stops, and the routes of the warp drive open.

  • Whisper: the Arachnid Queen, the Watcher, a Rogue Spidertron.
  • Chorus: the Twin Maws, a Colossus, the Plague Hulk.
  • Convergence: the Storm Guardian, the Devourer, the Last Commander.

The game tells you who is coming, and nothing more.

Between the fights

Someone answered the signal before you. The expedition of the Long Echo broke up on Nexus, and what it left is scattered across the planet.

  • The logs. A wreck of the expedition lies out there for every boss, and only its log tells how that boss fights. A signal detector points the way, and every victory reveals another wreck. You can fight blind, but you probably shouldn't.
  • The lairs. Every boss has a lair far from your base. Set up direction finders, wait for their bearings to narrow, and where two of them cross you find it. Call a boss in its own lair and it pays better: a second trophy, better each time, and loot. Every lair holds a dead pylon; wake it with a fine enough trophy and the boss comes weaker.
  • The storms. When a storm of Nexus Threat breaks, the old lightning ruins near you wake up. Walk into the lightning to pick up a charged shard. The Storm Guardian feeds on storms, and the shards take some of that storm away from it.
  • The story. The expedition's camp shows up when the Whisper starts. Where its commander went is something you only learn after Silence, and what he found there is locked behind the glyphs of its builders.

The signal also gets into your head. At night, far from your base, you may see and hear things that are not there, more often the deeper you go. A player setting turns it down or off.

Rewards

  • A trophy from every boss, every time.
  • Each finished stage sharpens the weapons the next one needs.
  • The Storm Guardian's death leaves the storms of Nexus weaker for good.
  • Silence opens the routes of the warp drive.

Every trial has its own sounds and fight music, and the technologies carry one emblem of the signal in four states. Nexus itself plays FIELDS from TFMG: Music.

Good to know

  • Nexus has no ordinary nests or worms: its enemies come only from the beacons. Added to a running game, the mod clears the enemies already there.
  • One trial at a time on the whole server.
  • The bosses of Big Monsters need explored land around your spawn. If there is none, the beacon comes back with a message.
  • Settings: boss health, beacon cost, countdown length, whether the trials gate the warp drive, and whether Big Monsters' bosses come only from the beacons.
  • Silence opens the Oort cloud and Sol. The edge of the system and the shattered planet open by their own technologies, as without this mod. The gate can be turned off in the startup settings.
  • Big Monsters' "allow nuker" is off by default with this mod, so the Last Commander's soldiers carry no atomic rockets. You can turn it back on.
  • Administrators can stop a stuck trial with /nexus-bosses-abort.

Requirements

Nexus Extended Promethium Endgame with Nexus Threat, Big Monsters, Toxic biters, Arachnids enemy and Electric flying enemies: the bosses are built from their creatures. TFMG: Music gives Nexus its music. razi-protocol is optional.

Source and bug reports: GreenTech-Solutions/nexus-bosses. Thanks to MFerrari for Big Monsters and the enemy mods, and to Karu_Kiruna for Nexus. Sounds, music and icons: CREDITS.md.

Highlights

From source data

Footprint

Rated a light load on a server.

License

Published under GPL-3.0.

Last update

Its author last shipped an update 16d ago.

Nexus Bosses on Nxeon

From our catalogue
One-click install
Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
Server side
Required on the server
Server load
light
Smallest plan we suggest
Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
2.5.0, released 2026-10-19

Recent builds

BuildReleasedGame versionsLoaders
2.5.02026-10-192.1n/a
2.4.02026-10-122.1n/a
2.3.12026-10-122.1n/a
2.3.02026-10-122.1n/a
2.2.02026-10-122.1n/a
2.1.02026-10-122.1n/a

Dependencies

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Nexus Bosses on a Factorio server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Factorio Mod Portal as “Mods”

Creatures & NPCs

Adds or changes creatures, NPCs and how they behave.

Runs on your server

From source side support

Factorio Mod Portal lists Nexus Bosses as required on the server. Check its Factorio Mod Portal page to see whether players need it too.

Compatibility

Game
Factorio
Runs on
Serverrequired on the server

Verified at the source

  • ✓Factorio Mod PortalOfficial listing, checked 2026-10-19Open ↗
  • ✓AuthorDeadpoolweid, as published on Factorio Mod Portal
  • ✓LicenseGPL-3.0Free

Nexus Bosses, answered

Generated from the mod’s own source data.

Do my players need to install Nexus Bosses?

Factorio Mod Portal lists Nexus Bosses as required on the server. Check its Factorio Mod Portal page to see whether players need it too.

Is it free?

Yes. Nexus Bosses is free to download from Factorio Mod Portal. Its license is GPL-3.0.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Nexus Bosses on a Factorio server.

Deploy in about a minute from $2.99 a month, then add Nexus Bosses in one click.