RimWorld Odyssey Mechhive Guide
Written by Andrew Hammel | RimWorld
The Mechhive in RimWorld: Odyssey is the new orbital endgame mission, letting you permanently destroy the mechanoid threat. Once you find and conquer the Mechhive, you can choose to either eliminate all mechanoids across the planet or harvest their power for yourself.
This decision changes your world forever and opens up a unique post-ending state.
What Is the Mechhive (Mechanoid Hive)
The Mechhive is the origin of all mechanoid production in RimWorld: Odyssey. It’s a massive, frozen metal station drifting in orbit, guarded by advanced security, dormant war machines, and heavily armed defenses. This is where all planetary mechanoid raids are directed from.
How to Unlock the Mechhive Mission
To access the Mechhive, you need to:
Collect gravcore technology from quests, ruins, and orbital sites
Build a signal jammer to bypass the hive’s defenses
Launch a gravship or shuttle to reach the Mechhive itself
Only then can you breach the platform and begin the assault.
What to Expect Inside
The Mechhive is designed as a brutal gauntlet. You’ll fight through:
Mechanoid outposts with blast doors and corridors
Heavy turrets that can instantly shred unprepared pawns
New enemies like the Cyclops mechanoid, which uses a gatling beam repeater
Mech vats that spawn reinforcements during combat
Your goal is to destroy the cerebrex stabilizers, which shield the final core. Every stabilizer you take out wakes more of the hive’s defenses.
The Final Choice
At the heart of the hive is the cerebrex core, a massive AI brain that controls every mechanoid on the planet. Once exposed, you get two options:
Destroy the core to permanently disable all mechanoids in your world
Harvest the core to gain powerful mechanoid tech for your colony
Either way, your colony continues after the mission. This is not a game-over screen. It’s a major world shift.
Why the Mechhive Matters
This is the first ending in RimWorld that removes a core threat while letting you keep playing. If you destroy the core, all future mechanoid raids stop. You can continue building, expand freely, or move on to the ArchoNexus ending in a mech-free world.
Some players even treat this as a kind of NG+ setup. By combining it with the ArchoNexus quest, you can start a new colony in a galaxy where the machine war is over.
On the flip side, mechs drop valuable resources. If you rely on them for lategame loot, wiping them out removes that income stream. Make your choice carefully.
Community Reactions
Players have praised the Mechhive for being more dynamic than traditional endings like the ship escape. Unlike those, this one directly alters your game state. Others noted it feels closer to the Anomaly ending, where you gain power instead of just leaving.
Some also wished similar world-changing options existed for infestations or the Empire faction. Mods may eventually expand on this.
Final Blurb
The RimWorld: Odyssey Mechhive mission is a true endgame choice. You’ll fight through a deadly orbital fortress, unlock powerful tech, and decide the future of your world.
Regardless of whether you destroy the core or claim its power, the Mechhive changes everything.
FAQ
What is the Mechhive in RimWorld Odyssey?
It’s an orbital base that controls all mechanoids. You can assault it in the Odyssey expansion’s final mission.
How do I start the Mechhive mission?
Collect gravcore tech, build a signal jammer, and use a gravship or shuttle to reach the hive.
What happens if I destroy the cerebrex core?
All mechanoid activity stops permanently. No more mech raids.
Can I continue playing after the Mechhive mission?
Yes. The game continues. You can still pursue other endings like ArchoNexus.
What if I harvest the Mechhive’s power instead?
You gain advanced mechanoid tech, but mech raids continue.
Is the Mechhive harder than other endgame threats?
Yes. It’s one of the toughest combat challenges in the game, with layered defenses and escalating waves.
Can this be combined with other endings?
Yes. You can finish the Mechhive, then start a new ArchoNexus colony in a world with no mechanoids.
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