- The Alters Last Variable secret endings are determined by your final interaction with JanBot after activating the ENC Generator in the final cycle.
- Prerequisite: The DLC follows the base-game timeline where Jan Scientist remains on the planet to study the Oasis.
- Major Paths: You must choose between Create a Successor (Endless Research) and Break the Cycle (Acceptance of Mortality).
- Field Lab Impact: Assigning specialist Alters to Field Labs causes them to age significantly, altering the emotional weight of the finale.
- Save Strategy: Use the final autosave triggered before the descent to view both conclusions without replaying the 20-hour campaign.
Prerequisites and The Scientist's Legacy
The journey toward The Alters Last Variable secret endings begins with a fundamental understanding of Jan Scientist's obsession. Unlike the base game, where the goal was survival and escape, this expansion focuses on the cost of knowledge. The narrative assumes Jan Scientist made the choice to stay behind while the other "Jans" left the planet. This sets the stage for a solitary, high-stakes research mission that spans decades of planetary cycles.
Before you can reach the finale, you must navigate 14-day cryosleep cycles and manage a scientific crew consisting of four specialist Alters. Each decision you make regarding resource allocation and Alter assignments builds toward the ethical climax.
| Requirement | Description | Impact on Finale |
|---|---|---|
| Base Game Ownership | Must own the original The Alters | Provides context for Jan Scientist's isolation |
| Specialist Crew | Geologist, Physicist, Chemist, Biologist | Required for personal quest completion and achievements |
| Oasis Research | Complete all Sample Analysis Module tiers | Unlocks the final ENC Generator technology |
| Resource Buffer | Stockpile Megafluid and Proxylium | Necessary for the final construction phase |
The following sections contain detailed spoilers regarding the final mission, JanBot's true purpose, and the ultimate fate of the Jan Scientist lineage. Proceed only if you have reached the final cycle.
The Two Primary Secret Endings
The climax of the expansion occurs in the "Final Cycle: Energy Extraction." After constructing the ENC Generator and descending into the planetary core, Jan Scientist is faced with a binary choice presented by JanBot. This choice defines the legacy of the Oasis project and the future of any remaining Alters.
Ending 1: Create a Successor
- Decision: Jan accepts JanBot's proposal to create a new version of himself to continue the work.
- Theme: Obsession over Ethics. Jan prioritizes the "unanswered question" of the Oasis above human life.
- Outcome: A new Alter is created, and the cycle of research continues indefinitely, even as the original Jan fades.
Ending 2: Break the Cycle
- Decision: Jan rejects the succession model, choosing to let the project end with his own lifetime.
- Theme: Acceptance and Responsibility. Jan realizes that some mysteries are not worth an eternity of manufactured suffering.
- Outcome: The research project is terminated, and Jan finds peace in the uncertainty of the planet's nature.
To unlock the "Caring after all" achievement, you must complete all four Specialist Alter storylines before committing to either ending. This adds significant dialogue depth to the final confrontation.
Walkthrough: Reaching the Final Variable
Navigating the final stages requires precise resource management. You cannot trigger The Alters Last Variable secret endings without successfully terraforming the high-tier arenas and powering the ENC Generator. The following steps outline the critical path from Cycle 4 to the credits.
Advanced Terraforming
Install Tier III Terraformers in the Waterfall and Far Hill regions. This requires a steady supply of Megafluid (90 units per Terraformer) and Phased Rapidium. These regions provide the final data points needed for Core Analysis.
The ENC Generator Project
Research the ENC Generator Alternator in the Research Lab. This project takes 12 working hours and requires 100 Proxylium and 100 Megafluid. Once researched, craft it in the Workshop and transport it to Rocky Valley.
Field Lab Assignments
Before the final descent, ensure your third Field Lab in Far Hill is fully operational. Assigning an Alter here is permanent; they will age as the planet's hot phase passes, providing a haunting visual reminder of the time Jan spent in cryosleep.
The Descent
Once the generator is active, return to the base and inspect the laboratory board. Construct the final Elevator Section. This is your "Point of No Return." Ensure all personal conversations with your Alters are finished.
By creating a manual save before Step 4, you can easily reload to experience both endings and mop up any missing specialist achievements like "Wait, you can do that?" (creating the same Alter twice).
Specialist Roles and Their Narrative Impact
While the final choice belongs to Jan Scientist, the specialist Alters you create influence the gameplay difficulty and the emotional resonance of the story. Their scientific contributions are essential for reaching the secret endings efficiently.
| Specialist | Scientific Specialty | Research Bonus | Narrative Role |
|---|---|---|---|
| Jan Geologist | Terrain & Extraction | Fast Phased Rapidium | The explorer who discovers the core's instability. |
| Jan Physicist | Base Systems & Tools | Fast Mass Spectrometer | The skeptic who questions JanBot's calculations. |
| Jan Chemist | Refining & Samples | Fast Field Lab Research | The pragmatist focused on the chemical cost of the Oasis. |
| Jan Biologist | Living Ecosystems | Fast Terraforming | The moral compass who highlights the planet's suffering. |
Assigning Jan Chemist to the first Field Lab is statistically the best move. His 6-hour research speed (versus the standard 10) saves critical time in the early cycles, allowing you to stockpile resources for the expensive endgame modules.
Completion Checklist and Achievements
To fully master The Alters Last Variable, players should aim for 100% completion. This involves more than just seeing the endings; it requires mastering the terraforming system and the relationships between the Jans.
Final Completion Goals:
- Terraform all 9 arenas to their maximum tier.
- Complete the 'Caring after all' achievement by finishing all Alter storylines.
- View both the 'Successor' and 'Break the Cycle' endings.
- Collect all 30 unique planetary samples for the Sample Analysis Module.
- Unlock the 'Wait, you can do that?' achievement by re-creating a deceased Alter.
- Successfully enter cryosleep with a full crew of four specialists.
Do not neglect Organics in the final cycle. Even though the game is ending, you still need 50 Organics per person to enter the final cryosleep phase before the generator sequence. Running out can result in a premature game over.
Frequently Asked Questions
Q: Do my choices in the base game affect The Alters Last Variable secret endings?
No. The DLC starts as a separate campaign with a fixed premise: Jan Scientist stayed behind. Your base game save does not carry over, ensuring a balanced start for all players.
Q: Can I save all the Alters in the 'Break the Cycle' ending?
The fate of the Alters is tied to the project. In the 'Break the Cycle' ending, they are no longer needed for a succession loop, allowing Jan to treat them as individuals rather than tools for the first time.
Q: What is the 'Wait, you can do that?' achievement?
This is a hidden achievement unlocked by creating a specific specialist Alter (like Jan Geologist) for a second time after the first one has been permanently assigned to a Field Lab or lost.
Q: Is there a third 'True' ending?
The community often refers to 'Break the Cycle' as the true ending because it provides emotional closure to Jan Scientist's character arc, but both endings are considered canon within the 'Last Variable' branch.
The mystery of the Oasis is designed to be partially ambiguous. Whether you choose to continue the search or accept the unknown, the expansion's endings serve as a meditation on the limits of human knowledge.