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How to Beat "Plague Inc." Bacteria on Normal

Ashleign has been playing video games for more than 20 years. His Blogs have been viewed over 7 million times.

Get help defeating Bacteria on Normal.

Get help defeating Bacteria on Normal.

Walkthrough of Plague Inc. Bacteria on Normal

Looking for help beating Bacteria on normal? Look no further! Recently, I've updated the original walkthrough to something a little easier, with less frills—a more direct approach. This walkthrough of Bacteria on Normal is 100% guaranteed to succeed: It has worked five times for me so far, so I am going to go ahead and release it to the public. Good luck!

Basic Rules

First and foremost, some rules for completing the walkthrough:

  • Devolve all symptoms until everyone in the world is infected. There will be a message for this.
  • Follow the walkthrough to the T; build the points to the exact amount.
  • Burst: all bubbles, new infected countries, and so forth.
  • Purchase the game to add more fun without all the ads. The purchased version also comes with the ability to fast forward, to change DNA stuff, and cheats!
  • Have fun!

What to Do

  1. Start your Bacteria in South Africa.
  2. Build your points to 50. Devolve any symptoms. Put points into: Air 1, Water 1, and Water 2.
  3. Build your points to 100. Devolve any symptoms. Put points into: Drug Resistance 1, Drug Resistance 2, Heat Resistance 1, Air 2, and Extreme Bioaerosol.
  4. Build your points to 30. Devolve any symptoms. Put points into: Cold Resist 1 and Cold Resist 2.
  5. Build your points to 100. Devolve any symptoms until everyone is infected.
  6. Once everyone is infected, start your points in any symptom. I prefer to start with Insomnia.
  7. Work your way to the middle where you will find Total Organ Failure (image below.)

This is your ticket to killing everyone in the world. Congrats!

Video Walkthrough

Did It Work for You?

Questions & Answers

Question: I tried this walkthrough and got close to winning. However, a cure was created before my disease could kill everyone. Any tips?

Answer: Try again, this time pay attention to all the point builds!

Question: When following this guide to beat Plague Inc. Bacteria, from what I can see, I don't upgrade anything until I reach 50. Why not upgrade those as I get the DNA?

Answer: Short answer: It breaks. Building points gives time for your bacteria to multiply. Making the changes you make even more powerful over time.

Question: How do you infect Greenland in Plague Inc.?

Answer: Gotta follow the tutorial to the letter my friend.

Scroll to Continue

Read More From Levelskip

Question: is there a way to beat Plague Inc. without devolving?

Answer: There are plenty of ways to beat this one. However, I find this is the easiest, slacker way. Lazy, if you will.

Question: Are we able to do these out of order with the same outcome to beat Plague Inc. Bacteria?

Answer: Nope!


Emilie on June 08, 2020:

This works for me but I started getting scared and I went like crazy trying to put more symptoms. Also I wanted to ask you, was the purpose of devolving the symptoms so the bacteria is not discovered? Then once everyone is infected with this bacteria that at first is not deadly but soon becomes lethal.

Elite on April 26, 2020:

Followed this for bacteria, worked like a charm! For giggles i tried it on virus, worked there too. I let the mutations happen and still killed the planet. Took 624 days.

john on April 03, 2020:

Symptoms mutate to fast and cost to much. I was never even able to save up enough for the fist set of upgrades

alistar of david path on April 02, 2020:

997 days and 37% cure research complete

kepalaBatuFlu on April 01, 2020:

It's work like charm, have been tested on PC.

Alistair of david PATH on March 30, 2020:

i won bacteria on normal and followed your instructions

Faith on March 15, 2020:

I used this. The first time, I think I missed a step. I got close but a cure was found. Second time, I made sure to follow the steps to a t and was successful.

Chris on March 06, 2020:

Ok, I did it but after step 7 do I have to do anything else?

Lampshade on March 02, 2020:

Yeah it works

Michele on February 19, 2020:

Did not work

boldface on February 15, 2020:

This strategy worked like a charm. Followed the exact steps with exact number of points and in the end my bacteria was victorious in 1024 days. Thanks and a great job.

PS- Do you have strategy for Brutal level ?

Mr.Bad on February 10, 2020:

Those who says this is not working & other BS things let me tell you I tried it for the first time & it did work. But for that you should follow all the steps correctly.I didn't tweaked the steps(Bacteria- on normal even I didn't changed the Disease name- Nek) & destroyed the entire world. Shame to those who don't know how to follow simple steps.

Infidel on February 07, 2020:

Worked like a charm!

Random Person on February 06, 2020:

It works! To those who say that this is BS, You guys are just salty that it didn't work for you! Thank you for making this!!

Baloney on February 05, 2020:

This is utter BS. I followed this to the letter and still lost on normal. The game is BS and completely unbeatable. Deleted.

yeet on February 01, 2020:

me wondering why this not working me also doing south America in stead of Africa.

ChinHammer on January 30, 2020:

First time I played on normal level for bacterial and viral it worked, have lost every time but once since. Tried your method and the cure went from 25 percent to 100 percent in just a couple minutes. Seems to work better when you add early symptoms like cough and GI issues, insanity and dysentery work well too.

Peter on January 27, 2020:

Worked like a charm :) With the extra DNA points I had towards the end, I continued to evolve the Abilities item that started with "Drug Resistance", which helped slow cure development. Thanks for the advice!

B on January 27, 2020:

Tried this, worked first time. I'm confused about some of the comments. I suspect they didnt actually follow the tutorial. eg, "Everyone died but greenland". Why did you make it lethal before everyone was infected as step 6 says? Although I do believe there's a random chance that the infection get's noticed even if it's not symptomatic.

idek on January 27, 2020:

This guide is great! I finally won normal mode, thanks!

It worked on January 25, 2020:


Josh on January 25, 2020:

Coronavirus really took the world by storm...

Somebodee on January 15, 2020:

This worked really well!!

Max Towers on January 12, 2020:

I used this tutorial on brutal and won. Only difference is that after you develop Total Organ Failure, gotta focus on slowing down the cure, and done

Gavin on December 21, 2019:

The whole world died...

Except Greenland

Thanks, Ashleign! on December 13, 2019:

Worked like a CHARM

Whoever on November 14, 2019:

This did not worked, i followed every step and at the end i did not had enough points to buy the total organ failure and the cure was made and everyone lived

lol on September 26, 2019:

it worked

Leeroy Jenki on September 21, 2019:

It worked! The earth died in 646 days.

Donovan on August 20, 2019:

This even worked on brutal

Yay!! on June 27, 2019:

I completed it in 722 days with only 15% of the cure done!!!

Yeet on June 21, 2019:

Did this one brutal and 1170 days 73% cure but worked

Draizan on June 10, 2019:

I've tried this game maybe a hundred times and managed to win once (at easy level) but failed to win in normal. Finally a gave up and check any tips. I followed your tips, failed at the first time coz i misstep (cold ressist 1st). The 2nd time i followed it correctly and everybody dies

Anonymous on May 21, 2019:

Walkthrough also works on Brutal. I did not try it on Mega Brutal as I did not purchase the full version.

God Speed on May 14, 2019:

697 days and 21% cure worked super well and if you refund the transmission you get points and do genetic reshuffle and it makes your cure % lower and take longer. I am happy to say that Chlamydia has destroyed our planet

foxy033 on May 06, 2019:

if you go insomnia path also get seizures and insanity then dysentery it kills a lot faster and makes it harder to cure

Satan on May 05, 2019:

720 days 24% cure ......

But i started in India

Jesus on May 01, 2019:

Worked like a charm, 854 days 26% cure. Good tactic. The people saying it didn't work must have done it wrong lol

Panzerschrekt72 on April 23, 2019:

Saudi Arabia is easier. Start with cysts, then abscesses, rash, sweating, air 1, air 2, bird 1, bird 2, antibiotic 1, bacterial resilence 1, skin lesion, bacterial resilence 2, bacterial resilence 3, anaemia, paranoia, coughing, pneumonia, cold 1, cold 2, hyper sensitivity, sneezing, water 1, water 2, genetic hardening 1, genetic hardening 2, seizure, insanity, necrosis, paralysis, coma, haemorrhagic shock, internal haemorrhaging, genetic shuffle 1, shuffle 2, shuffle 3, Total organ failure. Always use this strategy to beat Mega Brutal Bacteria. Dont devolve symptom, Use Metabolic Jump, Genetic Mimic, Aerocyte, Sympto-stasis, and extremophile. If you failed to infect Greenland. Focus to cold resistance, water, air and antibiotic, Greenland sea route is to and from Russia and Norway.

Eyyyyyyy on April 15, 2019:

Is there a faster way to do this? It seems like it would work but take a long time

Apex legends sucks on April 09, 2019:

It worked

Ashleign (author) on April 01, 2019:

This usually happens when you don't follow the tutorial line for line. How many times have you tried it?

Edwin on March 31, 2019:

Every country fell except for Greenland and Iceland,

Ashleign (author) on March 28, 2019:

Thanks for the tip! This tutorial has been viewed over 6 million times. :)

ThatOneDusty801 on March 24, 2019:

First of all, you start your plague in China, not south Africa. Second, you want to get early symptoms, that's how you get DNA points.

Potato on March 12, 2019:

Ive veen trying for ages to win as bacteria and now I can finally see what virus is like

Eberhardt on March 08, 2019:

It worked to get the plague started, but you have to continue making the plague stronger and more resistant to the pharmaceuticals and environmental changes. Then you have to put as many points as you can into alternative ways of making the plague deadly.

also yeet on March 06, 2019:

After everyone is infected you can refund all the transmission thingos and get more points cuz they dont matter if everyone is infected

yeet on March 06, 2019:

mine worked but when i got symptoms it was straight up noticed and destroyed xd

WAKA WAKA on March 05, 2019:

22 hours later I played again the same steps except I made a mistake the first time I didn't devolve I evolved OOF. :)

WAKA WAKA on March 04, 2019:

This Didn't work the cure was formed to fast and you didn't form enough DNA points :00F

Hakotako on March 04, 2019:

I did this but nick cage doesn’t kill everyone

Sophie on March 02, 2019:

I was so close to winning but not everyone in the world was infected :(

Dr.TurtleEX on February 25, 2019:

I tried heaps of times and Greenland always survives!

Ashleigh (without the 'n') on February 24, 2019:

After years of playing this game and always losing (but still replaying, because it's so good), I never bothered to look up a walkthrough until today. Thank you for the guide, Ashleign!

1100 days, 35% complete.

Will on February 18, 2019:

5 stars. 27% cure. This worked for me the first time and is very straight forward and strategic.

Person on February 13, 2019:

Good on iPhone, won in 1090 and 34% cure

Alexandra Aly on February 13, 2019:

Worked on Android!!

Ich on December 12, 2018:


Andreas on December 10, 2018:

It works also on brutal but not at mega brutal! (Mabye if you reduse the mutation rate it will)

Idk on December 10, 2018:

I start in India and upgrade water and air to extreme bioaerosol get drug resistance 1 and bacterial shield to 3 and cold resistance 2 and wait for everyone to get infected (devolving any mutations) then I get total organ failure and then I watch the world end ( also works on brutal)

q on November 23, 2018:

It works but at this rate the population will die of natural disasters before the disease kills them

Daniel on November 22, 2018:

All that is needed for the transmission stage all the way through prions is water 1, water 2, heat resist 1, cold resist 1, cold resist 2, and drug resist 1.

Air transmission is a waste of points as there are several isolated islands, notably Greenland, that have water ports but no airports, but none with airports and no water ports. Heat resist 2 is not needed if you start in a hot country like South Africa. Drug resist 2 will speed infection rates in advanced countries but is a luxury that should be skipped if points are tight. It is assential to devolve all symptoms until all humans are infected.

Once all humans are infected evolve complete organ failure and then buckle down to fight the cure the humans will start researching shortly after your plague shows any symptom.

Ashleign's guides seem to understate the importance of fighting the cure. In my experience it is neccessary to spend a ton of points on cure fighting traits in the end game to finish off the humans entirely -- failing to do so will let them complete the cure before everyone dies, and in my view any game that does not result in complete extermination is a failure.

Me on November 14, 2018:

Worked wonderfully on Android! I won in 1169 days, 51% cure and 11 DNA left over!

Shadow on November 03, 2018:

Wow, it worked, i won in 1071 days and the cure was only 34% complete! this is legit guys, no kidding

Anon on October 14, 2018:

Did not work for android

Rainbow on September 24, 2018:

nice, won the game with %57 cure percent

Ricardo Mestre on September 18, 2018:

It worked perfectly! You rock, great tutorial!

Rindou on September 09, 2018:

Killed the entire world in 661 days.

Thanks for this guide!

Dario The Scottish Vicar That Loves Cars on September 05, 2018:

No not worked

Person on August 10, 2018:

This worked! It took me 752 days and they eventually stopped working on the cure because the government was failing. I won with 33% of the cure complete.

Phoenixo on August 10, 2018:

I followed this tutorial, I just changed start location to China to take the advantage of more people to be infected at game start.

Taf on August 09, 2018:

Got it with 52% Cure completed - thanks very much

James Ballard on August 08, 2018:

This worked for me, it was very good.

Eric on July 29, 2018:

I beat normal bacteria in 453 days without using the guide. Maybe this guide is.. garbage?

Isaiah on July 23, 2018:

876 days, noice!

Shawol on July 19, 2018:

i had to envolve a second symptom "strang" otherwise the cure would've been enveloped too fast....

Sydney on July 14, 2018:

Effective and efficient, killed everyone in 1342 days

ur mom on July 08, 2018:

thx 900 days

Teddy on June 17, 2018:

Thank you so much !

Sami on June 10, 2018:

This is actually a really great technique, so long as you remember to devolve all symptoms constantly before the planet is fully infected they dont even really notice the disease at all and dont start working on the cure, then once you have infected the entire population BANG you hit them hard with total organ failure and watch as the whole population helplessly comes to an end.

shayne on June 05, 2018:

doesn't work, they star the cure too fast

Mohannad Hakmeh on May 29, 2018:

It worked even in BRUTAL mode

love love love

Person on May 28, 2018:

It worked! I killed everybody in 946 days with the cure topping at 33%.

person on May 13, 2018:

i made a mistake and wasted some dna but it still worked, i almost failed lol

ZestyWings on April 13, 2018:

Worked like a charm on ps4. All these ppl saying it doesnt work confounds me. Just follow along and ull beat it. Not that difficult lol

Garfielf on April 09, 2018:

water1 water 2 and air 1 all together cost more than 50

wwei23 on April 08, 2018:

Try starting from rash. It has access to Total Organ Failure AND Necrosis!

Jason Bowen on March 25, 2018:

This is a horrible game. Can tell a game is garbage when you have to use walkthroughs like this to win in it.

Alex Hansen on March 08, 2018:

Yes! Thank you so much.

Some noob on March 06, 2018:

Worked flawlessly, damn!

I've just had the right idea, even did the "wait until everyone gets infected", devolving any symptoms and even trying to get to the middle of all symptoms, but always fall short of dna point. The key in my personal case was that raising/waiting without improving more than just a little the abilities and transmitions tabs.

Anyways, thanks dude for your service!

Polyanimal on February 22, 2018:

Worked beautifully!

Turns out I had the right idea before I saw your guide, I was just going about it the wrong way... I didn’t think to not have ANY symptoms... in fact, I didn’t even know it would continue to spread without them. I think that was my downfall.

Anyway, guide works perfectly first time. Good job explaining simply and effectively. Kudos.

Sherry on February 15, 2018:

Worked great! Thank you!

Roman Sharp on February 08, 2018:

You know, I honestly, for some reason couldn't beat Bacteria on normal mode. It is so simple when "You" describe it. If you can email me And tell me how to beat all of the other modes, if and when I need them. Thanks I hope I hear from you soon.

djfaiojdfl on February 06, 2018:

the cure became 100% and the disease was eradicated.

Creeper on February 04, 2018:

So cool and it works!I am doing it again to see if I remember how

Danielle on February 01, 2018:

Worked! Thank you :)

Marshmallow on January 27, 2018:

I won in 1215 days on BRUTAL with 54% cure progress. Thank you!

RammerHammer on January 19, 2018:

I beat it in 942 days with 32% cure progress


Annomus on January 17, 2018:


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