

Take control of a living virus and infect the human body from within. Destroy cells, harvest Biomass, evolve powerful mutations, and defend your Viral Core against relentless immune-system attacks in this incremental tower defense game.
Overview
Take control of a living virus and infect the human body from within. Destroy cells, harvest Biomass, evolve powerful mutations, and defend your Viral Core against relentless immune-system attacks in this incremental tower defense game.
Description
How to Turn Zombie combines incremental progression, tower defense pressure, and direct cursor-based combat.
Attack cells directly with your cursor
Defend your central Viral Core
Harvest Biomass and unlock permanent mutations
Build powerful upgrade synergies
Adapt to new mechanics across different organs
Face increasingly dangerous immune defenses and bosses
You are not fighting the infection. You are the infection.
Take control of a living virus and invade the human body from within. Destroy cells, harvest Biomass, evolve new mutations, and protect your Viral Core as the immune system becomes increasingly desperate to stop you.
Your cursor is not just a pointer — it is your weapon.
Strike cells directly, break through biological defenses, and collect the Biomass they leave behind. But spreading the infection is only half the battle. As the body reacts, antibodies and specialized immune cells begin attacking your Viral Core.
Push the infection forward while defending the very thing keeping it alive.
Biomass is more than a resource. It fuels a permanent Evolution Tree filled with mutations that can dramatically change the way you play.
Increase your damage, improve Biomass generation, trigger critical effects, create viral constructs, unleash electrical chain reactions, manipulate the battlefield, and combine mutations into increasingly powerful synergies. Choose how your virus evolves.
The deeper the infection spreads, the harder the body fights back. New cells, immune defenses, hazards, and biological mechanics constantly change the battlefield, forcing you to adapt your strategy and evolution.
What works in one stage may not be enough for the next.
Each organ is its own battlefield. Progress through different parts of the human body, each introducing its own environment, enemies, mechanics, and biological threats.
The bloodstream is only the beginning.
At the end of each organ, the infection faces a powerful biological boss. These encounters combine the mechanics introduced throughout the organ and push your build to its limits.
Your mutations will determine whether the infection survives... or gets eradicated.
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