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Weapon Lab

“The Weapon Lab can make powerful prototype defenses out of modules captured from the Blackguard.”
WeaponLab3 WeaponLab4 WeaponLab5
Level 1 Level 2 Level 3 Level 4 Level 5


  • The Weapon Lab is used to build Prototype Defenses.
  • It is unlocked upon reaching Headquarters level 15.
  • Upgrading the Weapon Lab allows you to place more powerful and more than one Prototype Defense.
  • The Weapon Lab cannot be upgraded while a Prototype Defense is being made.
    • Similarly, a Prototype Defense cannot be made while the Weapon Lab is upgrading.


  • Prototype Defenses are defenses that can be placed on your home base.
  • They are much more powerful than normal defenses.
  • Prototype Defenses are temporary. After 7 days, they self-destruct.
    • If one self-destructs while you are offline, you will get a notification that says, “Prototype expired!”.
    • If they have less than one day left, they start to vibrate and emit black smoke.
  • Prototype Defenses can be reclaimed while on your base similar to Statues but you will not gain anything in return.
    • There is a 3 second countdown to prevent accidental destruction similar to Statues.
    • If you already have the maximum amount of Prototype Defenses placed, save your Prototype Modules instead of building a new Prototype Defense. It is typically better to wait for your placed Prototype Defense(s) to self-destruct instead of wasting one.
  • They are built using Prototype Modules.
    • You must build the Weapon Lab to have a chance of receiving Prototype Modules. Read about the chance to win a module on the Prototype Modules page.


  • When initially constructed, the Weapon Lab is a large concrete semicircular structure on a larger circular base. There is a thick blue outline on the edge of the semicircle. A villager in a lab coat stands next to the lab.
  • At level 2, the Weapon Lab gains a small blue overhang on the far back. The concrete base is outlined with blue plating.
  • At level 3, the rest of the concrete base is filled in with another semicircular structure. In the middle is a round metal balcony with a circular warning tape design in the middle.
  • At level 4, the blue overhang gains a great deal of bulk, and now has a fan on the top.
  • At level 5, the blue overhang grows taller and has a drill-like structure on one side. There is a large amount of wire coiled around in the two places where the semicircular structures do not meet. A warning-tape design is marked on the front of the Lab.


  • The Weapon Lab is the only building whose build/upgrade costs unlocked at a certain Headquarters level exceed the cost to upgrade the Headquarters to the next level (by approximately 20%).
    • Although the level 5 Weapon Lab is unlocked at HQ level 19, its cost is set to as if it were unlocked at HQ level 20 (it would cost 4,400,000 wood, 4,300,000 stone and 3,400,000 iron if it is approximately 20% more than the cost of upgrading the HQ from 19 to 20.)
  • When a Prototype Defense’s construction is complete, it will be covered by a brown tarp, so players visiting your base will not be able to see which Prototype Defense you have ready.
  • Despite the fact that Prototype Defenses only last 7 days after being placed, an assembled Prototype Defense can remain undeployed in the Weapon Lab indefinitely.
  • There’s an achievement which is called Tinkerer that gives a total of 60 diamonds upon using a total of 960 Prototype Modules in the Weapon Lab.
Headquarters Level 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Number Available 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1


Building Size


Level Health Prototype
Defense Limit
Upgrade Cost Upgrade Time Instant Headquarters
Level Required
Xp Gain
Wood Stone Iron
1 2,000 1 1,610,000 1,230,000 450,000 1d 6h 2,694 15 54
2 2,600 1 2,280,000 2,040,000 890,000 1d 10h 3,685 16 58
3 3,300 1 3,200,000 2,660,000 1,690,000 1d 14h 4,784 17 61
4 4,100 1 3,900,000 3,600,000 2,360,000 1d 18h 5,776 18 64
5 5,000 2 4,900,000 4,900,000 4,900,000 2d 12h 7,772 19 77


Maximum Defense Marks Buildable
Lab Level
Shock Blaster

Lazor Beam

Doom Cannon

Damage Amplifier

Shield Generator

Hot Pot


1 I I I I I I I
2 II II I I I ? ?
3 II II II II II ? ?

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One comment

  1. The upgrade cost has changed with the last update.

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