Plague Inc: Evolved — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| Plague Inc: Evolved - Patch Notes 1.23.0.11 | 2026-04-21 | Glad you're all enjoying the update and the new DLC!Thanks for all your reports and feedback! Bug FixesGeneralFixed issue with multiple translations having English language words presentImproved conditions for unlocking CheatsFixed an issue where news headlines from the last game would appear after starting a new gameFixed issue where Zombies or other population types wouldn't appear on the world bar in their prescribed colourImproved stability for rare crash situationsXenolithFixed issue where G-COM would continue to contribute research after deathImproved conditions for event that would state Xenolith is "not dangerous to humans" when it ha |
| Plague Inc: Evolved - Patch Notes 1.23.0.10 | 2026-04-10 | Glad you're all enjoying the update and the new DLC!Thanks for all your reports and feedback! Bug FixesFix for game endings under certain circumstancesFixed 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 |
| Plague Inc: Evolved - Patch Notes 1.23.0.9 | 2026-04-10 | Glad you're all enjoying the update and the new DLC!Thanks for all your reports and feedback! Bug FixesGeneralUnlocking Cheats no longer requires completing XenolithFixed Zombies showing as "Recovered" in some circumstancesA few rare crashes fixed XenolithFixed 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 countryScenariosFixed issue where Leprosy would display as "Parasite" instead of "Bacteria"Updated leprosy score mod |
| Plague Inc: Evolved - Patch Notes 1.23.0.8 | 2026-04-09 | Glad you're all enjoying the update and the new DLC!Thanks for all your reports and feedback! ImprovementsAdded "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 XenolithBalance updatesScenariosLeprosy: Starting DNA and trait costs tweakedLeprosy: Score multiplier increased (easier to get 3 biohazards)BugfixesFixed the fill for the "Scenarios Completed" progress barFixed "Vampires rule the world" victory screen text when playing Xenolith and killing all humansFixed an issue where the score in Xenolith could become negativeFixed an issue where the Lattic |
| Plague Inc: Evolved - Patch Notes 1.23.0.7 | 2026-04-08 | 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.ImprovementsHumans will more intelligently deploy Meteor Defense technology when neededGCOM are now able to research Xenolith more easily if it has large amounts of unused XNABalance updatesScenariosReduced starting infectivity in the Leprosy scenarioUpdated scoring for Zombies vs Earth and Herd Immunity scenariosUpdated win requirements for the Herd Immunity scenarioXenolithMultiple Asteroid impacts damage planet and reduce passive XNA gain (Brutal+)Saving up too much XNA wi |
| Plague Inc: Evolved - Patch Notes 1.23.0.5 | 2026-04-07 | 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 FixesXeno-forming no longer appears on non-xenolith end screen graphLocalisation fixes - some text wasn't translating correctly - Known issue: There is still some text not translating, will be fixed tomorrow (Wednesday)BalanceBrutal and Mega Brutal difficulty adjustments for Xenolith (slightly less XNA, Research goes faster, abilities cost more XNA)Xenolith XNA adjustmentsQuality of lifeFinal Xeno-form graphic updatedXenolith: "Frequency Shift" can now be used against Pro |
| Update 1.23 and Aliens & Anti-Vaxxers DLC - Out Now! | 2026-04-07 | Update 1.23 - Special bonus for everyone: LeprosyGood 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!LeprosyLeprosy 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 |
| Aliens & Anti-Vaxxers DLC & Update 1.23 - Out Now! | 2026-04-07 | 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!But that's not all! There's free Leprosy for everyone in the new 1.23 Update.Xenolith: The Alien Crystal plagueFrom 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 t |
| New DLC: Aliens & Anti-Vaxxers - Out 7th April | 2026-04-02 | We hope you're ready to invade Earth, because we can announce that a meteor will hit Steam next week on 7th April!Xenolith: The Alien Crystal plagueFrom 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.Six New ScenariosA whole host of major new scenarios that add unique gameplay mechanics, mix up strategies and add narratives ripped from our world and beyond!Check out the store page to see what's coming to Plague Inc.Is there a free update at the same time?Yes, you will be pleased to k |
| Announcing Aliens & Anti-Vaxxers and Update 1.23 | 2026-03-26 | From the infinite depths of space comes an utterly alien plague type, we bring you… Xenolith: The Alien Crystal plagueRadically new gameplay, mysterious victory conditions, interstellar genes, haunting music and much more. The world will never be the same againXeno-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 huma |
| Early Warning System | 2026-03-19 | -.-. .- -. / .- -. -.-- --- -. . / .... . .- .-. / -- . ..--..MONDAY REALIGNMENT: COMPLETE TUESDAY REALIGNMENT: COMPLETE WEDNESDAY REALIGNMENT: COMPLETEFULL SIGNAL: THURSDAY |
| \\\ UNIDENTIFIED OBJECT DETECTED \\\ | 2026-03-05 | \\\\\\ PLEASE STANDBY \\\\\\ |
| Patch Notes 1.22.1.10 | 2026-01-28 | Fixing additional issues found in the last patch, thanks for your reports!Fixed an issue where the cursor would be invisible on Steam DeckFixed an issue where the cursor would not show the active ability icon when an active ability was selectedFixed 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 lobbyNdemic Creations |
| Patch Notes 1.22.1.8 | 2026-01-27 | Hi Folks, small patch to address issues introduced in the last update. Thanks for reporting them!ChangelogFixed an issue where buttons and menu items could not be selected, which also broke other areas of the game such as Save and LoadA "Y" gylph would appear on the World panel regardless if you were controlling the game via keyboard and mouse or controller/Steam DeckNdemic Creations |
| Steam Deck Update - 1.22.1.7 | 2026-01-26 | 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. ChangelogSteam DeckVastly improved playing experience on Steam DeckBug FixesFixed 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 controllerNdemic Creations |
| Patch Notes 1.22.1.6 | 2026-01-14 | Thanks for your feedback and enthusiasm for Outbreak Mode. We've got some fixes for Multiplayer, update now!ChangelogBug FixesFixed issue where replays in VS Multiplayer wouldn't play correctly.Fixed issue where Multiplayer Traits weren't translatingStay Healthy!Ndemic Creations |
| Ndemic Creations 2025 - 2026 Report Card | 2026-01-08 | Hello Plague Inc., Rebel Inc. and After Inc. players!As I normally do on our website last year and as I have each and every single year before that, since I started the company. I like to look back at what we've accomplished in the year and look ahead to what's coming next. This year, I thought we should bring it to Steam too!Key Events from 2025This was a really great year for us - especially for Plague Inc. and our new game After Inc.After Inc. was one of the top paid mobile games of the year worldwide, including 5th (UK and Germany), 12th (USA). 3.5 million people have played After Inc. so far, and it's been featured multiple times by Appl |
| Patch Notes 1.22.1.5 | 2026-01-08 | Thanks for your feedback and enthusiasm for Outbreak Mode. We've solved the missing text issue and updated Achievement conditions.ChangelogBalanceUpdated 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 FixesFixed issue where all text would vanish in the game - If you're still encountering this issue, please let us know!Stay Healthy!Ndemic Creations |
| Patch Notes 1.22.1.4 | 2026-01-06 | 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 FormChangelogBug FixesFixed 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 pointsFixed issue where Traits would not devolve but would still give DNA pointsFixed issue which caused DNA bubbles to disappear much quicker than the |
| Patch Notes 1.22.1.1 | 2025-12-16 | Hi Everyone! Glad to see you're all enjoying 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 FormChangelogBug FixesFixed an issue where the incoming Outbreak was shown too earlyFixed an issue where the 3D Plague Model wasn't showing for some players in the Trait ScreensFixed an issue where loading an Outbreak save multiple times would break the menusLocalisationImproved Text Wrapping for Difficulty Names in NorwegianImproved Text Wrapping for "Rewards Available" in multiple languagesStay Healthy!Ndemic Creations |