Tactics for high score on Plague Inc

I find the iOS game “Plague Inc” pretty easy since the same tactic seems to work on every level.

I simply evolve air and water transmission along with cold and drug resistance until every single human being is infected.
After that I just evolve coughing, “immunity something” and the next one giving me total organ collapse. The bodies hit the floor after that and the DNA points given during the downfall of society is invested in mitigating the effects of the cure.
This tactic never fails me (I play normal difficulty) but it never seems to give me a better than average score (3 / 5 biohazard symbols).

My question:

What is the score based upon? Time to complete the level? % cure developed? If I completed the level with minimum evolution? Something else? Everything above?

If you don’t know the above; Do you get higher scores? How?


DNA Sequence: Complex

Difficulty: Normal

Disease Type: Parasite

Time: 1050 days

Cure Progress: 20% complete

Score Total: 36630

4/5 bio’s

My tactic was basically the same. I also believe you get more bio’s on brutal. Except I go for coma as well to make it harder to cure. Along with paralysis and paranoia, coming from the insomnia line mainly.

But to answer your question, I believe it is mainly calculated by cure progress. Just did it again in 635 days, but 52% cure progress (less resistance upgrade more lethality) and got 12k score with 3 bio’s.

A test on brutal, also testing DNA points left over:




2018 days

98% complete



To me this says that cure progress is still most important, as I had nearly 60 DNA points left over (it was quite hard to do that on brutal btw, barely did it (first try though 😉

Source : Link , Question Author : mmmattias , Answer Author : Zeff520

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