Zombie Invasion Calculator

Your details

Starting number of uninfected humans in the simulation.
Determines what fraction of zombie encounters humans try to escape vs. engage in melee.
Probability that a human wins a one-on-one fight with a zombie.
Starting number of zombies. Even a handful can grow exponentially.
How many humans each zombie encounters per day on average.
attacks/zombie/day
Chance that a human killed by a zombie rises as a new zombie.
%
Fraction of zombies that survive a losing fight and revive.
%
Affects how many flee attempts the zombies successfully intercept.
If enabled, idle zombies that did not feed degrade at this daily rate.
OutcomeHumanity survives
Stalemate after 365 days. Humans hold on (9,270 remaining).

Who wins and when

Days simulated365
Surviving humans9,270
Remaining zombies10
Peak zombie count10
Day of peak zombie count0
Total human casualties730
Total zombies killed365
Human survival rate0.9%
Surviving humans9,270
Remaining zombies10
Peak zombie count10

Neither side was wiped out after 365 days.

  • 92.7% of the original population survived, a relatively successful outcome.

Next stepSimulation ran for 365 days. Toggle zombie starvation or increase human skill to test different outcomes.

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