Structures

Structures

Structures are friendly units/objects that spawn in to help you survive the wave or kill the enemy aliens. Structures can be spawned by certain Items and Weapons as seen on the lists below.

Engineering Builds are based around having turrets and/or Landmines around, which means a lot of structures.

Improved Tools has the ability to increase the spawn rate of Garden's fruits and the spawn rate Landmines. It also increases the firing rate of turrets. The amount is equal to 50% of your Attack Speed.

The Engineer has an ability that makes Turrets spawn together in a cluster, but it doesn't affect other structures.

The Streamer gains +2 armor for each structure you have, granted by weapon and items you have. So even Wandering Bot grants armor. However with Landmines the +2 armor doesn't depend on the amount of mines on the field, but rather just on the amount of weapons and items you have that spawns mines.

Scaling & Effects

Turrets and Landmines do not scale with Primary Primary Stats except Engineering, but do scale with Secondary Stats and other effects provided by Items.

Turrets are affected by Secondary Stats such as piercing and bouncing granted by the items Bandana & Ricochet (with a 50% damage falloff). Explosive Turret benefits from Explosion Damage and Size granted by Dynamite & Plastic Explosive. Turrets can inflict burning with Scared Sausage, and Snake helps Incendiary Turret inflict burn to more targets.

Ugly Tooth lets your turrets slow enemies on hit.

• Boxing Glove adds knockback to your turrets. Which might not be something you want.

Landmines are affected by Engineering, Explosive Damage, and Explosive Size.

Having negative Engineering instead decreases damage and healing of these structures and weapons down to a minimum of 1.

Item	Effect	Notes
Alien Worm	+3 Max HP +2 HP Regeneration -1 HP recovered from consumables	Alien Worm gives a lot of stats. Max HP is something you want and HP regen is doubled. Since you have so much healing, it might be worth it to discard the consumable healing.
Blood Donation	+40 Harvesting You take 1 damage per second (does not give invulnerability time)	Blood Donation is a very powerful item if you can get it early in the game. Few characters can spare the life to use it, but this is no problem for the doctor.
Weird Ghost	+3 Max HP Start the next wave with 1 HP	The Weird ghost gives you cheap Max HP, but sets your HP to 1 during the start of the next wave. This is no problem for the Doctor, who can regain the HP without issue. But don't let your guard down.
Sad Tomato	+8 HP Regeneration Start waves with -50% HP	Sad Tomato grants a large amount of HP regeneration in trade for starting with 50% HP during the start of each wave. With additional regeneration, you'll easily get back to full health before the wave really kicks in.
Regeneration Potion	HP Regeneration is doubled when you have less than 50% health +3 HP Regeneration	The Regeneration Potion stacks with your doubled HP regeneration, and lets you heal 4 HP per tick while below 50% HP.
Ricochet	Your projectiles gain +1 bounce -25 % Damage	The Ricochet provides an additional bounce which is very powerful on ranged weapons without bounce or piercing such as the Medical Gun
Bandana	Projectiles pierce through 1 additional target -10 % Damage	The Bandana provides an additional pierce which works with turrets and is especially powerful with File:Explosive Tools.png Explosive Tools

Structures

These items spawns structures.

Name	Rarity	Effects	Base Price	Limit	Unlocked By	Tags
Garden	Tier 2	Spawns a garden that creates a fruit every 15 seconds	50			Consumable, Structure
Landmines	Tier 1	A landmine spawns every 12 seconds dealing 10 (+100%) damage in an area	15			Engineering, Explosive, Structure
Turret	Tier 1	Spawns a turret that shoots bullets dealing 10 (+80%) damage	15			Engineering, Structure
Incendiary Turret	Tier 2	Spawns a turret that shoots flames dealing 8x5 (+33%) burning damage	40			Engineering, Structure
Medical Turret	Tier 2	Spawns a medical turret that shoots bullets healing 3 (+5%) HP	40			Engineering, Structure
Laser Turret	Tier 3	Spawns a turret that shoots piercing bullets dealing 20 (+125%) damage	65			Engineering, Structure
Explosive Turret	Tier 4	Spawns a turret that shoots explosive bullets dealing 25 (+150%) damage in an area	80			Engineering, Structure
Wandering Bot	Tier 3	Spawns a little bot that slows down nearby enemies	60			Less Enemy Speed, Structure

Turrets Fire Rate

The base Fire rates of the different turrets are listed below.

You can increase the fire rate of the turrets with the Improved Tools item which makes the turrets scale with 50% of your attack speed.

Turrets spawned by Wrench are the same as the turrets spawns by their respective items.

The attack speed of turrets is slightly randomised between each shot to between 70% and 130% of the attack speed. So the Attack Speeds shown here are just the averages.

Turret	Atk. Speed
Turret	0.73s
Incendiary Turret	0.28s
Medical Turret	2.2s
Laser Turret	0.87s
Explosive Turret	0.87s
Tyler	2.2s

Weapons that spawn Structure

These Weapons spawn structures.

Name	Class	Damage	Attack Speed	DPS	Crit Damage/Chance	Range	Knockback	Lifesteal	Special Effects	Base price	Unlocked by
Pruner	Support	10(50%) 15(65%) 20(80%) 25(100%)	1.14s 1.06s 0.98s 0.89s	8.8(43%)/s 14.2(61%)/s 20.4(81%)/s 28.1(112%)/s	x1.25 (3%) x1.5 (6%) x1.75 (9%) x2 (12%)	150 150 150 150	2 2 2 2	0 0 0 0	Spawns a garden that creates a fruit every 15/14/12/10 seconds	15 28 52 95	Default
Screwdriver	Tool	8(50%50%) 12(50%50%) 16(50%50%) 20(50%50%)	1.05s 1.0s 0.97s 0.87s	7.6(47%47%)/s 12.0(50%50%)/s 16.5(51%51%)/s 23.0(57%57%)/s	x2 (10%) x2 (15%) x2 (20%) x2 (30%)	125 125 125 125	3 3 3 3	0 0 0 0	A landmine spawns every 12s/9s/6s/3s dealing 10(100%) damage in an area	10 22 45 91	Default
Wrench	Tool	12(100%) 16(100%) 20(100%) 24(100%)	1.7s 1.64s 1.55s 1.49s	7.1(58%)/s 9.8(60%)/s 12.9(64%)/s 16.1(67%)/s	x2 (3%) x2 (3%) x2 (3%) x2 (3%)	175 175 175 175	20 20 20 20	0 0 0 0	Spawns a Turret/Incendiary Turret/Laser Turret/Explosive Turret	20 39 74 149	Default

Characters

These Characters Have mechanics that interact with Structures. See the Engineering page for characters related to engineering in general.

Name	Stats	Unlocked By	Unlocks	Item Tags
Engineer	+10 Engineering Engineering modifications are increased by 25% You start with 1 Wrench Structures spawn close to each other Damage modifications are reduced by 50%	Get 5 turrets on the map simultaneously	Robot Arm	Engineering
Streamer	+3% of your materials per second while standing still (+25 max) +40% Damage while moving +40% Attack Speed while moving +2 Armor for every 1 Structure you have -50% materials dropped -1% Damage for every 15 Materials you have -1% Speed for every 30 Materials you have	Reach -20% Speed	Community Support	None