Perks

Perks (Shop Upgrades)
Perks are the little upgrades you can buy in the Shop (Blood, Brains Bones). Here we will give you a list of each perk from the Shop, what they do and if they have a cap or not.

Blood Upgrades:

 * Bloodthirst
 * This upgrade increases zombie damage by 1 each upgrade. Initial cost is 50 blood.  Cap is 40 levels


 * Sharpened Teeth
 * This upgrade increases zombie damage by 3 each upgrade. Initial cost is 3.00K blood.  Cap is 50 levels
 * Razor Claws
 * This upgrade increases zombie damage by 5 each upgrade. Initial cost is 28.00K blood.  No cap
 * Killer Instinct
 * This upgrade increases zombie damage by 8 each upgrade. Initial cost is 1.00M blood.  No cap
 * Like Leather
 * This upgrade increases zombie health by 10 each upgrade. Initial cost is 100 blood.  Cap is 40 levels
 * Thick Skull
 * This upgrade increases zombie health by 25 each upgrade. Initial cost is 5.00K blood.  Cap is 50 levels
 * Battle Hardened
 * This upgrade increases zombie health by 40 each upgrade. Initial cost is 32.00K blood.  No cap
 * Tough as Nails
 * This upgrade increases zombie health by 100 each upgrade. Initial cost is 1.00M blood.  No cap
 * Cold Storage
 * This upgrade increases brain storage by 50 each upgrade. Initial cost is 150 blood.  Cap is 20 levels.  Quantity upgrades like this add to the base amount of storage and then percentage increases are applied so it doesn't matter if you level this before or after a percentage boost.
 * Recycling is Cool
 * This upgrade increases chance to recover a brain from a dead zombie by 10% each upgrade. Initial cost is 1.00K blood.  Cap is 10 levels or 100% chance to recover a brain.  Nice.
 * Your soul is mine!
 * This upgrade increases the chance for a corpse* to become a zombie by 10% each upgrade. Initial cost is 1.50K blood.  Cap is 10 levels or 100% chance to become a zombie.  Welcome to the family.
 * Infected Bite
 * This upgrade increases the chance for a zombie to infect it's victim by 10% each upgrade. Initial cost is 3.50K blood.  Cap is 10 levels or 100% chance to infect.  Infected Humans and Dogs take damage until they die unless healed by a Medic.  Medics begin to appear in Level 20.
 * Detonate - Spell
 * This upgrade unlocks the Detonate spell which turns all zombies into a cloud of plague upon detonation. Duration of 5 seconds using 69 energy to cast and cooldown of 117 seconds.  Initial cost is 25.00K blood.  Cap is 1 level.  If used before a level ends you also get Brains and their Bones drop on the ground for collection.  If you Detonate after the level is finished you only get the Brains.


 * Gigazombies? - Spell
 * This upgrade unlocks the Gigazombies spell which turns any zombies summoned after casting this spell into a giga version of itself until the timer runs out (5 seconds) which multiplies stats by 10x with a cooldown time of 355 seconds. Initial cost is 50.00K blood.  Cap is 1 level.  Use Energy Charge then Gigazombies before starting a level and your initial force will all be Giga and with Energy Charge in effect you can click to create lots more Gigas.  Also helpful to set your Caged Zombies to Auto Release making them Giga as well.  Great start to any level.
 * Blazing Speed
 * This upgrade increases a burning zombie's attack and movement speed by 5% each upgrade. Initial cost is 30.00K blood.  Cap is 10 levels.  Burning Zombies are damaged every few second leading to their eventual death.  Water Golems heal damage but do not put out the flames.
 * Spit it Out
 * This upgrade initially unlocks a ranged attack for your zombies which infects enemies with the plague and deals damage. Every upgrade after it increases spit distance by 5.  Initial cost is 500.00K blood.  Cap is 10 levels
 * Runic Syphon
 * This upgrade reduces x% amount of the cost of Runes. Each upgrade increases this by 1%.  Initial cost is 34.00K blood.  Cap is 10 levels or 10% savings of Blood, Brains or Bones.
 * More Gigazombies (Removed)
 * This upgrade unlocks the setting in the graveyard menu to spawn gigazombies instead of zombies automatically for 5x the energy. Initial cost is 100.00M blood.  Cap is 1 level. Removed on October 18, 2020.

*Corpse implies to any creature, this means a dog will become a zombdog.
 * Faster Harpies
 * This upgrade increases how fast harpies fly by 2 per level. Initial cost is 100.00M blood.  Cap is 20 levels.

Brain Upgrades:

 * Energy Rush
 * Increases the rate at which energy replenishes by 0.5 per second. Initial cost 20 brains.  Cap is 20 levels
 * Master Summoner
 * Increases max energy by 5 per level. Initial cost 10 brains.  Cap is 20 levels
 * Primal Reflexes
 * Increases zombie speed by 1 per level. Initial cost is 5 brains.  Cap is 20 levels
 * Blood Harvest
 * Increases blood capacity by 10% per level. Initial cost is 50 brains.  No cap.  Percents are applied after quantity increases so it doesn't matter which you level first.
 * Unholy Construction
 * Unlocks Construction menu in which you can construct buildings. Initial cost is 50 brains.  Cap is 1 level
 * Infected Corpse
 * Increases chance for zombie to explode into a cloud of plague on death by 10% per level. Initial cost is 500 brains.  Cap is 10 levels
 * Energy Charge - Spell
 * Unlocks the spell Energy Charge which increases your energy rate by 5x lasting 20 seconds using 50 energy to cast and cooldown of 160 seconds. Initial cost is 2.00K brains.  Cap is 1 level
 * What Doesn't Kill You
 * Gives plague the ability to heal your units and increases by 10% per level*. Initial cost is 10.00K brains.  Cap is 20 levels
 * One is Never Enough
 * Increases your creature (Golems) cap by 1. Initial cost is 20.00K brains.  Cap is 15 levels

*This means that if you had maxed this ability not only will the plague damage any enemies in range, it heals zombies by 200% of that damage as well.
 * Tank Buster
 * Gives your harpies the ability to drop fire bombs down on tank units during boss levels. Initial cost is 40.00K brains. Cap is 1 level

Bone Upgrades:

 * Bone Throne
 * Increases max energy by 10 per level. Initial cost 50 bones.  Cap is 15 levels
 * Crown of Bones
 * Increases energy rate by 0.2 per second every level. Initial cost is 200 bones.  Cap is 25 levels
 * Bonebarrows
 * Increases bone collector capacity by 5 per level. Initial cost is 300 bones.  Cap is 20 levels
 * Bone Reinforced Tank
 * Increases blood capacity by 2.00K per level. Initial cost is 500 bones.  No cap.  Quantity upgrades like this add to the base amount of storage and then percentage increases are applied so it doesn't matter if you level this before or after a percentage boost.
 * Brain Cage
 * Increases brain capacity by 400 per level. Initial cost is 650 bones.  No cap.  Quantity upgrades like this add to the base amount of storage and then percentage increases are applied so it doesn't matter if you level this before or after a percentage boost.
 * Earth Freeze - Spell
 * Unlocks a spell that when cast freezes all enemy units for 15 seconds using 75 energy to cast and cooldown of 45 seconds. Initial cost is 5.00K bones.  Cap is 1 level.  NOTE:  Earth Freeze does not stop Police or Army from shooting or Medics from healing.
 * Plague Armor
 * Decreases the damage of any infected human by 2% per level. Initial cost is 15.00K bones.  Cap is 10 levels
 * Bulletproof
 * Increases chance for Earth Golems to reflect bullets by 5% per level. Initial cost is 60.00K bones.  Cap is 5 levels


 * Bombs Away
 * Increases how many harpy bombs a harpy can carry at once by 1 per level. Initial cost is 500.00K bones.  Cap is 3 levels for a total of 4 tank bombs or plague bombs depending on the level.  Tank bombs drop when tanks are present.

Part Upgrades:

 * Extra Limbs
 * Each level increases golem damage by 2%. Initial cost is 900 parts.  No cap
 * Big Boned
 * Each level increases golem health by 2%. Initial cost is 1.00K parts.  No cap