Mycelarium Ending: The Great Migration
How the Mycelarium ending works, what The Great Migration asks of you, how to prepare, and what remains after the credits.
The Mycelarium ending is called The Great Migration. It appears as a permanent objective in the top-left quest panel from the first minute, alongside the five magic mushrooms, and it unlocks the achievement of the same name. It is not a boss fight or a final upgrade; it is a narrative conclusion to the colony's expansion.
This page explains what the objective asks, how to prepare, and what the game does after the credits. It avoids inventing a step-by-step trigger that the current build does not document.
What is The Great Migration?
The achievement text is explicit: The Great Migration — Finish the game by a great migration. The quest panel tracks it from the start, which tells you it is the main goal rather than a hidden ending.
Community discussion links the finale to the Spore Mushroom and the idea of the colony leaving its original network. A player who finished described the ending as explaining "the idea" of the game, which fits an incremental story about spread, release and renewal rather than a combat climax.
The exact sequence is not documented in the patch notes or the store page. Treat the steps below as preparation, not a guaranteed trigger.
What should you prepare?
A run that can finish the migration needs four things:
- A stable economy. Food and water production that continues while you work on the final objective.
- Access to all three layers. The deep map is part of the story, and the Light Shroom sits there.
- A Spore Mushroom with upgrades. Spores are the mechanism the narrative points to, and the branch is expensive.
- The five magic shrooms, or at least Flora. Flora's food discount makes the final builds cheaper; the full set completes the parallel quest.
The 100 percent checklist→ orders these goals. If you only want the ending, you can skip the collection and focus on the economy plus spores.
How do you trigger the ending?
The safe answer is: follow the THE GREAT MIGRATION objective and the game's prompts. The objective updates as you progress, and the finale is reached through the migration sequence rather than a menu option.
What is confirmed:
- The achievement exists and is named after the migration.
- The quest is visible from the start of Exploration Mode.
- Survival Mode removes the final goal, so the ending is Exploration-only.
- Spores and the deep layers are part of the narrative build-up.
What is not confirmed:
- The exact number of spores or the exact location of the final trigger.
- Whether the five magic shrooms are required.
- Whether the ending can be reached before the million-centimetre milestone.
Those details are marked for testing in the site's BLOCKED.md rather than guessed. If your run reaches the finale, the sequence is worth recording for other players.
The migration sequence assumes a working network. If you have been consuming trees and letting producers die, rebuild the food loop before you start the final push. A stalled network cannot finish a sequence that needs spores and growth.
How long does the ending take?
A focused player reports finishing in about twenty minutes by rushing length, width, free food and soil density, then using water mushrooms at the aquifer. That is a speed route, not a normal run. A relaxed player reports three hours for a fuller playthrough.
The ending itself is short once the preparation is done. The time is in the economy, not the finale.
What happens after the credits?
The save continues. The map, the network and the achievements remain, and you can keep expanding for the million-centimetre milestone and the remaining secrets. There is no confirmed New Game+ or carry-over.
If you want a different pace, Survival Mode is a fresh run with no final goal and a tighter balance. The game modes guide→ compares them.
Does the ending affect achievements?
It unlocks The Great Migration. The other 18 achievements remain available after the credits, including the secrets and the growth milestones. Nothing is locked out by finishing.
Is the ending missable?
No. The quest persists and the save continues, so you can finish it whenever your economy supports it. The only way to lose access is to start a Survival run, which removes the objective by design.
FAQ
Is there more than one ending?
No alternate ending is confirmed. The Great Migration is the single listed finale.
Do I need all five magic shrooms for the ending?
Not confirmed. The quests run in parallel, and the ending achievement does not mention the shrooms. Flora is still worth collecting for the discount.
Can I finish in Survival Mode?
No. Survival removes the final goal.
Does the game end after the credits?
No. The save continues and the map stays open.
Official source: Mycelarium on Steam ↗ Official source: Achievements list ↗
The Steam discussions hub ↗ contains player descriptions of the finale; the achievement page ↗ shows the current unlock rate for The Great Migration.