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Short answer: Quarantine Zone: Miami Zero launched on October 15, 2026 as a free prequel expansion for owners of Quarantine Zone: The Last Check. Its exact campaign length, named difficulty options, Miami Zero-specific ending count, and save migration behavior have not been established in reliable launch information.
The expansion is available on PC through Steam and PC Game Pass and on Xbox Series X|S. The documented additions are a Miami origin-point setting, new symptoms and tools, campaign-exclusive survivors, medicine research and development, and a yacht-repair metagame.
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What Quarantine Zone: Miami Zero is
Brigada Games describes Miami Zero as a prequel campaign set in Miami, the reported origin point of the infection. That makes it an origin story rather than a continuation of the original campaign. The expansion uses the survivor-screening premise of Quarantine Zone: The Last Check but adds systems intended to broaden what happens after a survivor reaches your checkpoint.
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- New diagnostic content: additional symptoms and new tools change how survivors are assessed.
- New people to manage: dozens of survivors are exclusive to the Miami campaign.
- Medicine research and development: a laboratory progression system lets you investigate treatments instead of relying only on existing procedures.
- Yacht repair: assigning survivors to repair a damaged yacht creates a separate management layer alongside screening and resource decisions.
Miami Zero released on October 15, 2026. Xbox Wire confirms versions for Xbox Series X|S and PC, including PC Game Pass. The expansion is free to owners of the original game; a Game Pass subscription provides access through the PC catalog, but that should not be confused with a separate purchase entitlement for people who do not own the base product outside the subscription.
How long is Miami Zero?
There is no reliable, authoritative completion-time benchmark for Miami Zero at launch. Neither the developer announcement nor the platform coverage establishes an average number of hours, a guaranteed range, or a completion-time target. Any precise figure presented as the expansion’s normal length would therefore be speculation.
What the original game’s time tells you—and what it does not
For context only, PC Gamer reported finishing the original Quarantine Zone campaign in under 12 hours. That is a reviewer’s result for the base campaign, not a measurement of Miami Zero. It cannot be converted into an expansion estimate because the prequel introduces additional systems and a different campaign structure.
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Players planning their schedule should treat Miami Zero as a campaign-sized expansion without assigning it a fixed weekend or evening count. Your total time will depend on how carefully you investigate symptoms, how often you experiment with medicine research, and how efficiently you allocate survivors to yacht repairs. Those activities are documented features, but their time cost and the number of required missions have not been published.
How to interpret future playtime claims
When a completion figure appears, check four details before treating it as representative:
- Whether the number covers only the main campaign or optional objectives as well.
- Whether the player used a first run, a replay, or an optimized route.
- Whether the source measured the final release or an early build.
- Whether the figure applies to Miami Zero specifically rather than the original game.
Until those conditions are documented, the accurate answer remains that Miami Zero’s length is not established.
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Is Miami Zero harder than the main game?
No published source gives Miami Zero a named difficulty setting or a measured difficulty curve. It is not possible to state that the prequel is definitively harder, easier, or equal to the original on a conventional rating scale.
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The announced mechanics point to a broader workload. In addition to screening survivors, you must account for new symptoms and tools, decide how to test medicines in a research system, manage scarce resources, and assign survivors to repair a damaged yacht. Each task competes for attention and personnel. That can make a session feel more demanding even if the game does not change enemy behavior or introduce a formal difficulty tier.
The base game’s Steam description frames its central challenge as screening survivors, managing limited resources, and preventing the plague from spreading. Miami Zero retains that decision pressure while adding research and repair responsibilities. The practical difference is therefore best described as more systems to coordinate, not as a verified increase in numerical difficulty.
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A practical way to approach the added workload
- Separate diagnosis from experimentation. Record what a new symptom or tool is intended to reveal before spending scarce supplies on a medicine test.
- Protect your resource buffer. Do not commit every available item to research if the next screening sequence may require emergency capacity.
- Assign repair work deliberately. Sending a survivor to the yacht removes that person from other duties, so make the assignment only after checking immediate screening needs.
- Review consequences before confirming. Branching decisions and survivor assignments can create downstream problems; pause to inspect the available information rather than treating every option as interchangeable.
These are decision-management recommendations based on the announced systems, not evidence of a hidden difficulty modifier.
Does Miami Zero have replay value or an endless mode?
The underlying game has two campaign endings and an Endless mode, according to Windows Central. Pixel Bandits also reports that Endless mode is available from the start and adds replayability, while noting that repeated audio and limited survivor variety can reduce variation over time.
Those facts establish replay options for Quarantine Zone: The Last Check as a product. They do not establish how Miami Zero implements replayability. Launch coverage does not state whether the prequel has its own ending count, whether it uses the same Endless mode, whether Endless mode includes Miami-specific content, or whether the yacht and medicine systems create separate post-campaign scenarios.
What you can safely expect
- Confirmed: the base game offers two campaign endings.
- Confirmed: the base game offers an Endless mode.
- Not stated: a Miami Zero-specific ending count.
- Not stated: a separate Miami Zero Endless structure or a guarantee that every prequel system carries into Endless mode.
If you are buying or installing the expansion primarily for repeated runs, wait for an in-game menu or an official update that identifies its replay modes. Do not assume that the base game’s two endings automatically mean Miami Zero has two additional endings.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Will an existing Quarantine Zone save work with Miami Zero?
Save migration is unverified. Steam lists Steam Cloud for Quarantine Zone: The Last Check, confirming cloud-save support for the base product. No cited official source explains whether Miami Zero imports an existing campaign or Endless save, changes the save format, requires a new run, or shares progress between the original and prequel.
Protect your progress before launching
- Finish any active session and quit to the desktop. Do not copy files while the game is still writing a save.
- Confirm Steam Cloud status. In Steam, open Settings > Cloud and verify that cloud synchronization is enabled. Also check the game’s Properties page for its cloud-save status.
- Make a local backup. Locate the game’s save-data folder using Steam Support or Brigada Games’ current support instructions, then copy the entire folder to a separate location. Keep the original untouched.
- Launch Miami Zero and test with the backup available. If the expansion offers a new-campaign prompt, do not overwrite an existing slot until you know whether the two products share saves.
- Stop if synchronization conflicts appear. When Steam reports different local and cloud versions, preserve both copies and consult support rather than choosing one at random.
These steps reduce the risk of losing progress; they do not prove compatibility. For a definitive answer about migration, contact Brigada Games or platform support after checking the current release notes.
Platform access and ownership
| Platform or service | Availability | What is established |
|---|---|---|
| Steam on PC | Available | Miami Zero is delivered through the existing PC game; Steam Cloud is listed for the base title. |
| PC Game Pass | Available | Xbox Wire confirms the expansion is included in the PC catalog. |
| Xbox Series X|S | Available | Xbox Wire confirms a console release. |
| Other platforms | Not stated | Launch coverage cited here does not confirm additional platforms. |
Owners of Quarantine Zone: The Last Check receive Miami Zero at no additional charge. Availability through a subscription catalog is a platform-access statement; it is not evidence that every account receives a permanent standalone license after a subscription ends.
Miami Zero compared with the original campaign
| Comparison point | Miami Zero | Original campaign |
|---|---|---|
| Setting and narrative role | Miami; a prequel focused on the reported origin point of the infection. | Main campaign; its setting is not restated in the launch material summarized here. |
| Symptoms and tools | New symptoms and tools are announced. | Original screening toolkit. |
| Survivors | Dozens of campaign-exclusive survivors. | Original survivor pool; a comparable count is not stated. |
| Progression systems | Medicine research and development plus yacht repair. | Those Miami-specific systems are not documented for the original campaign. |
| Campaign length | Not stated in Brigada Games or Xbox Wire launch coverage. | PC Gamer reported completing the campaign in under 12 hours; that is one reviewer’s result, not a universal average. |
| Ending structure | Not stated. | Two campaign endings are reported by Windows Central. |
| Endless mode | Miami Zero implementation not stated. | Endless mode is reported by Windows Central and Pixel Bandits. |
| Save continuity | Migration from an existing save is not verified. | Steam Cloud is listed for the base product. |
Launch checklist and common mistakes
- Do not budget from the under-12-hour figure. That number belongs to the original campaign.
- Do not infer a difficulty tier from the new systems. The added workload is documented; a measured difficulty increase is not.
- Do not assume two more endings. The base game’s ending count does not establish Miami Zero’s.
- Do not overwrite a save before checking compatibility. Steam Cloud support for the original does not confirm cross-campaign migration.
- Do not treat subscription access as permanent ownership. PC Game Pass availability depends on the active catalog and subscription terms.
For PC problems unrelated to save migration, use the current Steam support and Brigada Games support instructions. Diagnostic utilities can identify installation or synchronization issues, but they cannot guarantee a fix for an expansion-side bug.
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