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Quarantine Zone: Miami Zero is a free prequel campaign for owners of Quarantine Zone: The Last Check. It launched on October 15, 2026, and is available on PC, Xbox Series X|S, and through PC Game Pass. The campaign moves the outbreak investigation to Miami, described by Brigada Games as the infection’s reported origin point.

The important caveat for prospective players is that launch coverage does not yet establish a reliable completion-time benchmark, a named difficulty setting, a Miami Zero-specific ending count, an independent endless mode, or save migration behavior. The sections below separate confirmed features from details that remain unverified.

What Miami Zero adds

Miami Zero is an expansion rather than a separate full-price game. Brigada Games announced it as a prequel campaign and says it is free for owners of Quarantine Zone: The Last Check. Xbox Wire confirms availability on Xbox Series X|S and PC, including PC Game Pass.

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The prequel is built around the same quarantine-management premise as the original but adds systems that change what you must monitor during a run:

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  • A Miami setting tied to the reported origin of the infection.
  • New diagnostic tools and symptoms to identify when screening survivors.
  • Dozens of campaign-exclusive survivors.
  • A medicine research-and-development system.
  • A ship-repair metagame in which survivors can be assigned to repair a damaged yacht.

Those additions are documented by the developer announcement. They indicate a campaign with more overlapping decisions, but they do not by themselves prove that Miami Zero is numerically harder or longer than the original.

At-a-glance answers

Question What is established at launch
When did it release? October 15, 2026.
Is it free? Yes, for owners of Quarantine Zone: The Last Check.
Where can I play? PC, Xbox Series X|S, and PC Game Pass.
How long is it? No authoritative Miami Zero completion-time figure has been published.
Is it harder? No named setting or measured difficulty curve is documented; the new systems increase decision workload.
Does it have Endless mode? The original game has Endless mode, but Miami Zero’s exact implementation is not stated.
Will my old save work? Not verified. Steam Cloud is listed for the base game, but migration and save-format behavior are undocumented.

How long is Quarantine Zone: Miami Zero?

There is no reliable published playtime benchmark for Miami Zero as of its October 15, 2026 launch. A precise number would therefore be speculation. Treat descriptions such as “six hours” or “ten hours” as individual player reports rather than an established campaign length until a consistent set of runs is available.

What the original-game figure means

PC Gamer reported that its reviewer finished the original Quarantine Zone campaign in under 12 hours. That is a reviewer’s experience with the base campaign, not a measurement of Miami Zero, and it should not be used as a promised duration for the prequel.

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Why your own time may differ

Miami Zero asks you to screen survivors for additional symptoms, investigate medicines, manage scarce supplies, and allocate people to yacht repairs. A player who experiments with the laboratory and replays decisions can spend substantially longer than someone who follows a direct path. Difficulty settings, if added or exposed in a later update, could also change the total time, but launch coverage does not document any named setting.

How to plan without a number

  • Reserve a normal campaign block rather than assuming a short downloadable mission.
  • Keep separate saves before major medical or allocation decisions if the game permits manual slots.
  • Do not judge the expansion’s scope by the original campaign’s under-12-hour review figure.
  • Look for an in-game chapter or completion statistic after finishing; that will be more useful than launch-day estimates.

Is Miami Zero harder than the main game?

No source establishes a higher difficulty rating, a new difficulty mode, or a measured completion-rate change. The safest answer is that Miami Zero appears more demanding in workload, not that it has been proven harder in a numerical sense.

Where the extra pressure comes from

  • More diagnosis: New symptoms and tools expand the information you must interpret before admitting or rejecting a survivor.
  • Research trade-offs: Medicine research and development introduces a progression decision alongside day-to-day quarantine management.
  • Competing assignments: Survivors who are useful for screening, logistics, or treatment may also be needed to repair the damaged yacht.
  • Resource scarcity: The base game’s loop already centers on scarce resources and preventing spread; the new systems add more ways to spend limited capacity.

What “difficulty” does not mean here

It would be inaccurate to claim that enemies are stronger, timers are shorter, or failures are more frequent because launch sources do not provide those measurements. Miami Zero can feel harder when several decisions arrive at once, even if the underlying penalties are unchanged. Until players have comparable runs, describe it as a denser decision environment rather than a confirmed difficulty increase.

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Practical approach for a first run

  1. Read every new symptom description before committing a survivor to a scarce treatment or transport slot.
  2. Record which medicines you have researched and what resources they consume.
  3. Keep a small reserve of capable survivors for yacht repairs instead of assigning everyone to immediate screening.
  4. When a choice has an uncertain medical result, make a manual save first if the game offers one.
  5. Review the consequences of a failed assignment before repeating the same allocation on the next day or chapter.

Does Miami Zero have replay value or an Endless mode?

The underlying game has confirmed replay features. Windows Central reports two campaign endings and an Endless mode. Pixel Bandits likewise describes Endless as available from the start, while noting that repeated audio and limited survivor variety can reduce variation over time.

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What is confirmed for the base game

Replay feature Documented status What it means
Alternate endings Two endings in the original game. Decisions can lead to different campaign outcomes.
Endless mode Available from the start in the original game. An open-ended mode extends play beyond the main campaign.
Long-term variety Pixel Bandits reports repeated audio and limited survivor variety. Endless play may become familiar after repeated runs.

What is not confirmed for Miami Zero

Launch coverage does not state how many Miami Zero endings exist, whether its campaign branches independently from the original, or whether it has a separate Endless structure. The expansion may use the base game’s replay systems, but that is an inference, not a published specification.

Where replay value is most likely to come from

Replay value should come from trying different survivor-screening judgments, medicine research priorities, and yacht-repair assignments. Those choices can change the order in which you gain information and resources. However, do not assume that every choice creates a unique ending or that the prequel doubles the original game’s content; no such count has been published.

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Will my Quarantine Zone save work with Miami Zero?

Save continuity is currently unverified. Steam lists Steam Cloud for Quarantine Zone: The Last Check, which confirms cloud synchronization for the base product. It does not confirm that an existing campaign or Endless save will open Miami Zero, that the expansion preserves old progress, or that the save format remains unchanged.

What you can safely assume

  • You may need to start the Miami Zero campaign separately from an existing run.
  • Your base-game save should not be treated as a guaranteed prerequisite or import file.
  • Cloud synchronization is not the same as cross-campaign migration; it copies save data between supported installations but does not automatically convert it.

Back up before launching

  1. Finish or pause any important run and exit to the desktop or console dashboard so the latest save is written.
  2. On Steam, open Library, right-click Quarantine Zone: The Last Check, choose Properties, open General, and confirm that Steam Cloud is enabled.
  3. For a manual backup, use Steam’s Manage or Browse local files command, locate the game’s save-data folder, and copy it to a separate drive without renaming or editing the original files. The exact folder name and location can vary by build.
  4. On Xbox, wait for synchronization to finish before switching consoles or deleting local data. Do not remove the base game’s saves while testing the expansion.
  5. If the game offers a migration prompt, read whether it creates a new slot or overwrites an existing one before accepting.

If a save appears missing

Close the game without creating a new save in the same slot, then check that you are using the same Steam account or Xbox profile. On PC, verify that Steam Cloud is enabled and allow any conflict dialog to display both local and cloud timestamps; choose the newer known-good copy rather than guessing. If the expansion still does not recognize the data, retain your backup and contact Brigada Games or platform support. There is no official launch statement confirming a migration workaround.

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How to access Miami Zero

PC through the existing game

Install or update Quarantine Zone: The Last Check in your PC library, then launch it and look for the Miami Zero campaign entry. Because the expansion is described as an add-on to the existing game, a separate purchase should not be required for owners. If the campaign tile is absent, fully quit the client, install all pending updates, and relaunch before troubleshooting saves.

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PC Game Pass

Xbox Wire lists Miami Zero as available on PC Game Pass. Catalog availability and account entitlements can change, so check the current listing in the Xbox app and make sure the base game is installed or available to your account. Owning the expansion through the original game and accessing it through a subscription are separate entitlement paths.

Xbox Series X|S

Xbox Wire confirms the expansion on Xbox Series X|S. Update the installed game, launch it from the profile that owns or has access to the base game, and allow the console to complete any cloud synchronization before changing devices.

Troubleshooting common launch problems

The Miami Zero campaign is not visible

  • Confirm that the base game is updated to the current build.
  • Verify that you are using the owning account or an active PC Game Pass entitlement.
  • Restart the game after the update rather than leaving it suspended.
  • On PC, use the platform’s file-verification option if installation files appear incomplete; this checks local files but cannot repair an unannounced game-side bug.

A cloud-save conflict appears

  • Stop at the conflict screen and compare timestamps.
  • Keep a copy of the newer save before choosing a replacement.
  • Do not start a new campaign until you know which copy is being retained.

The game crashes after installation

Record your platform, game version, whether the crash occurs before or after the Miami Zero menu appears, and whether the base campaign still loads. That information is more useful to support than repeatedly deleting saves. Preserve your backup while testing updates or reinstalling.

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Miami Zero compared with the original campaign

Comparison point Miami Zero Original campaign
Setting and role Miami prequel tied to the reported origin of the infection. Main campaign; its specific setting is not detailed in the launch material summarized here.
Tools and symptoms New tools and symptoms are announced. Original screening and quarantine systems.
Progression Medicine research and development plus yacht repair. Base resource-management progression.
Campaign length Not established by a reliable benchmark. PC Gamer reviewer finished in under 12 hours; individual time varies.
Endings Not stated in launch coverage. Two endings reported by Windows Central.
Endless mode Not stated in launch coverage. Reported as available from the start.
Save continuity Migration from existing saves is unverified. Steam Cloud is listed for the base product.

Bottom line for prospective players

Miami Zero is a free, Miami-set prequel with meaningful new systems, not a documented fixed-length side mission. Buy or install expectations should be based on the confirmed features—new symptoms and tools, medicine research, campaign-exclusive survivors, and yacht repair—while treating playtime, difficulty, Miami Zero’s ending structure, Endless mode, and save migration as open questions. Back up your existing saves before launching, and use the current PC or Xbox listing to verify entitlement.

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