Plague Inc: Evolved

Hi Folks, a small patch to address some reported issues. Thanks for your feedback!

Changelog

• Fixed an issue where the Peripheral Verge Outbreak would crash on start

The world keeps changing! And Plague Inc. evolves with it in this new free update!

The 2026 World Update uses the latest global data sets from the World Bank to upgrade the core Plague Inc. simulation model gamewide - including for the newly added Xenolith disease type.

If you want to live in the past, then the free Plague Legacy scenario is available to everyone and puts things back to the way things were in 2012!

Amazingly, Plague Inc. is 14 years old now and we couldn’t have kept on updating it without all your support. If you'd like to support us more, drop us a review; every one helps!

We've got some really cool plans for future expansions, so watch this space!

Changelog v1.24

• Country data updated to the latest global statistics

• Now 8,212,708,793 people worldwide

• Fixed an issue where Cure Research could go negative in Xenolith

• Fixed an issue where in rare situations Active Abilities could stay inaccessible in Xenolith

• Xenolith Genes are now counted in the "Unlocked Genes" stats

• Fixed issue where Darwin Award Outbreak modifier would pick starting traits

And if you didn't know, our newest game After Inc: Revival is leaving Early Access soon! Check it out:

Glad you're all enjoying the update and the new DLC!

Thanks for all your reports and feedback!

Bug Fixes

General

• Fixed issue with multiple translations having English language words present

• Improved conditions for unlocking Cheats

• Fixed an issue where news headlines from the last game would appear after starting a new game

• Fixed issue where Zombies or other population types wouldn't appear on the world bar in their prescribed colour

• Improved stability for rare crash situations

Xenolith

• Fixed issue where G-COM would continue to contribute research after death

• Improved conditions for event that would state Xenolith is "not dangerous to humans" when it has already infected humans

Scenarios

• Fixed issue where save files for Leprosy would say it was a Parasite disease type

• Improved conditions for "Get 3 biohazards with each disease..." achievements such as Mr. President

Multiplayer

• Fixed issue with Multiplayer government actions not activating when conditions were met

• Fixed issue where players could not select a country in Co-Op

Glad you're all enjoying the update and the new DLC!

Thanks for all your reports and feedback!

Bug Fixes

• Fix for game endings under certain circumstances

• Fixed an issue with infection rate in the "Where is Everyone" scenario (fun fact - this was a stealth bug from 2017!)

• Fixed a display issue with the 3d disease model when skipping through the game setup quickly

Glad you're all enjoying the update and the new DLC!

Thanks for all your reports and feedback!

Bug Fixes

General

• Unlocking Cheats no longer requires completing Xenolith

• Fixed Zombies showing as "Recovered" in some circumstances

• A few rare crashes fixed

Xenolith

• Fixed issue where people wouldn't be infected in situations where the population density is low (e.g. Where is everyone scenario)

• Fixed an issue where "Metabolic Hijack" wouldn't pop bubbles on a fully xeno-formed country

Scenarios

• Fixed issue where Leprosy would display as "Parasite" instead of "Bacteria"

• Updated leprosy score mod

Glad you're all enjoying the update and the new DLC!

Thanks for all your reports and feedback!

Improvements

• Added "Shape the future" poll for Plague Inc - players can vote on what's next for Plague Inc.

• Improved crystal tracking during the game replay for Xenolith

Balance updates

• Scenarios

• Leprosy: Starting DNA and trait costs tweaked

• Leprosy: Score multiplier increased (easier to get 3 biohazards)

Bugfixes

• Fixed the fill for the "Scenarios Completed" progress bar

• Fixed "Vampires rule the world" victory screen text when playing Xenolith and killing all humans

• Fixed an issue where the score in Xenolith could become negative

• Fixed an issue where the Lattice Shedding gene generated too many crystal seeds when lots of countries or whole continents aligned. (Particularly on higher difficulties.)

• Fixed an issue where the "Percentage Cured" could show an incorrect value on Xenolith save files

Glad you're all enjoying the update and the new DLC!

Thanks for all your reports and feedback, we're getting straight on it and have more fixes coming throughout the week.

Improvements

• Humans will more intelligently deploy Meteor Defense technology when needed

• GCOM are now able to research Xenolith more easily if it has large amounts of unused XNA

Balance updates

• Scenarios

• Reduced starting infectivity in the Leprosy scenario

• Updated scoring for Zombies vs Earth and Herd Immunity scenarios

• Updated win requirements for the Herd Immunity scenario

• Xenolith

• Multiple Asteroid impacts damage planet and reduce passive XNA gain (Brutal+)

• Saving up too much XNA will reduce passive XNA gain if Xenolith isn't big enough (Brutal+)

Bugfixes

• Fixed a variety of localisation issues

• Fixed an issue where the double strain cheat created infected in the Zombies Vs Earth scenario

• Fixed an issue where scenario completion achievements could be unlocked on casual difficulty

• Fixed an issue where scenarios could show "0" on the victory screen

• Fixed an issue where the Surgeon General advisor in Cure Mode had become locked

• Fixed an issue where "XNA" could appear instead of "DNA" in Outbreak origin selection

• Fixed the dollar sign displaying for active ability costs outside of Cure Mode

• Fixed an issue where the human response might develop Xenolith traits

• Fixed an issue where the Leprosy 3D model was appearing as a Parasite instead of Bacteria

• Fixed an issue where the Xeno-Forming graph view could appear outside of Xenolith

• Fixed an issue where devolving a lot of traits in Xenolith could reduce score

• GCOM will now continue disruptor deployment even if they are in a country that recently stopped being disrupted

• GCOM teams no longer take damage from xenoformed land if it is inert

Additional

• Fixed issue with Custom scenarios not starting

Glad you're all enjoying the update and the new DLC!

Thanks for all your reports and feedback, we're getting straight on it and have more fixes coming throughout the week.

Bug Fixes

• Xeno-forming no longer appears on non-xenolith end screen graph

• Localisation fixes - some text wasn't translating correctly - Known issue: There is still some text not translating, will be fixed tomorrow (Wednesday)

Balance

• Brutal and Mega Brutal difficulty adjustments for Xenolith (slightly less XNA, Research goes faster, abilities cost more XNA)

• Xenolith XNA adjustments

Quality of life

• Final Xeno-form graphic updated

• Xenolith: "Frequency Shift" can now be used against Prototype Disruptors

• Tooltips updated for Xenolith

Known Issues - Fixes Coming

• Known issue: Multiplayer modes not displaying infected countries correctly. Fix expected tomorrow (Wednesday)

• Known issue: A few bits of text are still not being translated correctly. Fix expected tomorrow (Wednesday)

• Known issue: Leprosy "Rapid Abcesses" description incorrect

Update 1.23 - Special bonus for everyone: Leprosy

Good news, everyone can have leprosy for free - even if they don’t have the new Aliens & Antivaxxers DLC. To experience it first hand, just update the game and it will be there waiting for you!

Leprosy

Leprosy still infects around 200,000 new people every year, but it's dying out. Can you overcome modern treatments, social stigma and long incubation periods to bring Leprosy back into the headlines?

Will A&A ever be given away for free?

Some of you may have got our first DLC Plague Inc: The Cure for free. That is because we gave it away for free during the COVID pandemic as we didn’t want to profit from a serious health situation.

If an alien invasion* happens - Ndemic will adopt the same approach and give A&A away for free for the duration of the invasion.

*Invasion is defined as an alien entity commencing a military offensive intended to establish control over any portion of Planet Earth…

Got more questions? Check out the FAQ here:

https://steamcommunity.com/app/246620/discussions/0/797839485450717782/

Update 1.23 Changelog

New Features & Content

• Added Official Scenario: Leprosy (Free for all players)

• Xenolith - New Special Plague Type (Requires Aliens & Anti-Vaxxers)

• Added Official Scenarios: Anti-Vax, Hell On Earth, Zombies Vs Earth, Measles, Herd Immunity and Cure Mania (Requires Aliens & Anti-Vaxxers)

Bug Fixes

• Fixed Nanovirus not being impacted by blue Cure Bubbles

• Fixed Tutorial blocker when being asked to select a country

• Fixed issue where players could not progress in Cure Mode tutorial

• Fixed issue where playing on Casual would affect Speedrun scores

Aliens & Anti-Vaxxers

Our newest DLC: Aliens & Anti-Vaxxers is available now! It brings a brand new special disease type and six scenarios with conspiracies, demons and hordes of zombies!

Xenolith: The Alien Crystal plague

From the infinite depths of space comes an utterly alien plague type. Radically new gameplay, mysterious victory conditions, interstellar genes, haunting music and much more. The world will never be the same again.

Xeno-form the Planet!

Penetrate the Earth’s crust and begin a geological process to convert everything into pure, alien crystal. If any native lifeforms get in the way - simply shatter them in an unstoppable resonance cascade.

Extinction Event!

Use gravitational anomalies to pull meteors out of orbit. Choose whether to focus on crystal geodes to spread infection, EMP bursts to disrupt human technology or even vast, continent killing asteroids from deep space!

Resistance is futile

Humans are utterly insignificant but they can still disrupt you if left alone. G-COM will intelligently deploy advanced technologies including disruptors, defensive satellites, cloud seeding, alien powered computers, artificial tsunamis and more.

Six New Scenarios

Sometimes even an alien plague threatening the entire galaxy isn’t enough to get you out of bed. Well don’t worry - we have you covered with a whole host of major new scenarios that add new gameplay mechanics, mix up strategies and add new narratives. Read on for demons, herd immunity, endlessly marching zombies and more.

Anti-Vax

Faith in vaccines is collapsing. Global vaccination campaigns fight to hold the line, but weaponised conspiracies and viral misinformation are infecting the truth! What's the worst that could happen?

Hell on Earth

It's time to subjugate the world! Unleash a heat-loving, hell-spawned plague to corrupt people, animals and even the world itself. Satan is waiting in the depths...

Zombies vs. Earth

A melting glacier unleashes a forgotten nightmare. Greenland falls to the zombie hordes overnight! There is no virus, no cure, only the relentless march of the undead. Can they consume the world?

Check out the store page to read about Measles, Herd Immunity and Cure Mania!

Fixing additional issues found in the last patch, thanks for your reports!

• Fixed an issue where the cursor would be invisible on Steam Deck

• Fixed an issue where the cursor would not show the active ability icon when an active ability was selected

• Fixed an issue where buttons were selected in Multiplayer resulting in accidentally leaving a lobby when previously it would allow you to continue talking in the lobby

Ndemic Creations

Hi Folks, small patch to address issues introduced in the last update. Thanks for reporting them!

Changelog

• Fixed an issue where buttons and menu items could not be selected, which also broke other areas of the game such as Save and Load

• A "Y" gylph would appear on the World panel regardless if you were controlling the game via keyboard and mouse or controller/Steam Deck

Ndemic Creations

We've been working hard on improving the experience for Steam Deck players and today you can play those improvements!

Lots of bug fixes, reworked glyphs and improvements to screen readability.

Changelog

Steam Deck

• Vastly improved playing experience on Steam Deck

Bug Fixes

• Fixed an issue where Saving and Loading in an Outbreak game while the "Cough Drop" mutator was active would result in the costs of traits being significantly reduced further

• Variety of bug fixes relating to the Steam Deck controller

Ndemic Creations

Thanks for your feedback and enthusiasm for Outbreak Mode. We've got some fixes for Multiplayer, update now!

Changelog

Bug Fixes

• Fixed issue where replays in VS Multiplayer wouldn't play correctly.

• Fixed issue where Multiplayer Traits weren't translating

Stay Healthy!

Ndemic Creations

Thanks for your feedback and enthusiasm for Outbreak Mode. We've solved the missing text issue and updated Achievement conditions.

Changelog

Balance

• Updated Steam Achievements - We heard your feedback on these achievements and have dropped the requirements:

• Outbreak Survivor: Updated from 10 Outbreaks to 5 Outbreaks

• Outbreak Veteran: Updated from 50 Outbreaks to 10 Outbreaks

• Outbreak Legend: Updated from 100 Outbreaks to 20 Outbreaks

Bug Fixes

• Fixed issue where all text would vanish in the game - If you're still encountering this issue, please let us know!

Stay Healthy!

Ndemic Creations

Happy New Year! We can see you're all enjoying Outbreak Mode. Small patch to address some of the issues you reported, thanks for letting us know!

Be sure to keep reporting them in the Steam Forums or our Bug Report Form

Changelog

Bug Fixes

• Fixed issue where Mad Cow Disease Scenario Score threshold wasn't correctly awarding biohazards. Now correctly gives three biohazards at 50,000 (and over) Points and two biohazards at 30,000 (and over).

• Fixed issue where the 'Side Hustle' Mutator didn't give DNA points

• Fixed issue where Traits would not devolve but would still give DNA points

• Fixed issue which caused DNA bubbles to disappear much quicker than they should

• Fixed issue where Mutators could be visually deselected

• Fixed issue where "Bonus Icon" would show on all Outbreaks

• Fixed issue where outbreak origin countries could differ from Mobile

• Improvements to Multiplayer Versioning

• Improved Save / Load functionality

• Minor UI fixes

Stay Healthy!

Ndemic Creations

Hi Everyone! Glad to see you're all enjoying [url="https://steamcommunity.com/games/plagueincevolved/announcements/detail/536620574115366611?snr=2___" buttoncolor="#ffd500"]Outbreak Mode, small patch to address some of the issues you have reported!

Be sure to keep reporting them in the Steam Forums or our Bug Report Form

Changelog

Bug Fixes

• Fixed an issue where the incoming Outbreak was shown too early

• Fixed an issue where the 3D Plague Model wasn't showing for some players in the Trait Screens

• Fixed an issue where loading an Outbreak save multiple times would break the menus

Localisation

• Improved Text Wrapping for Difficulty Names in Norwegian

• Improved Text Wrapping for "Rewards Available" in multiple languages

Stay Healthy!

Ndemic Creations

Daily diseases come to Plague Inc! Infect the world with new outbreaks, unique game mechanics and powerful pathogen upgrades.

Free for all players!

Daily Outbreaks

A new plague is unleashed on the world every 24 hours with different starting bonuses, origin countries and more.

Unique Mutators

Adapt and exploit unique disease/human modifiers that fundamentally change both your plague and the world. Economic devastation, climate chaos and population booms stack up against aggressive mutations, destructive cures and unstable evolution. Each daily outbreak is full of new surprises, opportunities and challenges.

Rewards

Make your Plagues stronger and more versatile after each victory with permanent pathogen upgrades. Improve your genetic code, traits and origin abilities to give you more options for the future.

Global Rankings

How infectious are you really? Dynamic global rankings per outbreak show how well you are able to adapt to changing conditions and how your score compares to others worldwide.

Changelog

Features & Additions

• Outbreak Mode: Daily Challenges, 100s of Modifiers, 100s of Rewards

• New News Headlines - With many submitted by the community!

Balance Changes

• Mad Cow Disease Scenario: Reduced score requirement for 3 biohazards. Now need 50,000 Point and 30,000 for 2 Biohazards

• Mad Cow Disease Scenario: Reduced randomness of Fish Event, allowing for more opportunity to infect islands

Quality of Life

• Improved variation of Disease Name randomiser

Bug Fixes

• Fixed description for Rice trait in the Mad Cow Disease scenario

• Fixed mutation issues with Dairy and Beef traits in the Mad Cow Disease scenario

Hi everyone! Small update to improve some backend systems.

Changelog

• Updated Unity version

Ndemic Creations

The world keeps changing! And Plague Inc. evolves with it!

The 2025 World Update adapts Plague Inc. to modern times, thanks to vast amounts of data from the World Bank, as well as adding a new free scenario: ‘Plague Legacy’

v1.21 - Changelog

New content:

• Plague Legacy (free scenario): Years pass, and the world changes. But not here! The year is 2012, Plague Inc. has just launched. Step back in time and see what things were like in the olden days...

Quality of life:

• Country data updated. Now 8,059,506,979 population worldwide

• Olympics game event updated

Engine updates:

• Support for new Plague Inc. game mode (coming in future free update)

• Support for new Plague Inc. disease type (coming in future paid DLC)

And in case you missed it, check out our new game! Have you ever wondered what happens after Plague Inc.? Set in the ruins of a Necroa Virus Apocalypse, rebuild society from the ashes in After Inc: Revival, coming soon! https://store.steampowered.com/app/3337140/After_Inc_Revival/

Stay tuned for news on our new Game Mode (Free) and new plague type (DLC)!

Real world news - Greenland has just opened a new international airport. To help one of our favourite countries celebrate, we decided to add it into the new Greenland International scenario!

P.s. in case you missed it, we just announced our latest game After Inc. which lets you see what happens after a game of Plague Inc. You can wishlist it now!

https://store.steampowered.com/app/3337140/After_Inc_Revival/

v1.20 - Changelog

• Added Greenland International scenario

• Added information window for our new game After Inc.

• Fixed issue which caused disease models to render at a lower resolution in some cases.

• Fixed an instance of missing text in The Cure DLC mode

• Fixed instance of cheat icons appearing in the wrong places in the Cure DLC mode

• Fixed issue which caused UI in multiplayer to break after playing Cure DLC mode

• Fixed issue with start bubble audio

• Fixed an issue which meant the Simian Flu Colony could go invisible

• Fixed issue which could cause negative DNA to be awarded to the player for popping the opponents' starting country bubble

• Scrolling in menus is no longer tied to FPS

• Various updates to the main menu GUI

• Amended a Spanish translation error regarding the unlock order of the Nanovirus

• Removed an instance of debug text left in the game

Now get those on those flights to Greenland International!

The Ndemic Creations Team

Hi everyone! Glad to see you're all enjoying curing the Frozen Virus, just a small hotfix today.

Changelog

• Fixed an issue with DrillZero events

Ndemic Creations

Save the world from a novel virus emerging from the melting permafrost!

New Special Pandemic for Plague Inc: The Cure.

• Race to analyse an unknown disease.

• Adapt to the new threat with unique initiatives, abilities and tactics.

• Discover the mystery of the Frozen Virus' origins, with multiple endings!

Free for all owners of Plague Inc: The Cure

https://store.steampowered.com/app/1472780/Plague_Inc_The_Cure/

Take control and stop a deadly global pandemic by any means necessary. Allocate resources to boost testing capacity, make facemasks compulsory, lock down countries or investigate experimental treatments in Plague Inc.’s biggest expansion ever!

We've got lots more updates coming for Plague Inc: Evolved and Plague Inc: The Cure! Be sure to follow us on Twitter and join our Discord for the latest updates and exclusive betas.

The Ndemic Creations Team

Changelog

• Added Frozen Virus Special Pandemic type to Cure Mode

• Fixed a bug where the Board Game scenario could sometimes show the wrong end game message

• Fixed a linewrap issue in the tutorial text.

• Added a cancel button when a scenario fails to load due to being unpublished.

• Fixed issues on the statistics screen for Favourite Starting Country, Gene, Scenario and Disease Unlock %