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BuildingBlueprint.png

Summary

  • Classified Items are rare but powerful support items which help advance the player's progression.
  • They can be obtained from Submarine Dives(within the mysterious treasure slot at a low chance) or occasionally purchased from Trader.
  • You can only store up to 1 Classified Item of each type at a time. Discovering a Classified Item of the same type from a finished Submarine dive will make it impossible to collect the treasure until the currently stored one is used.
    • If you cannot use an item for whatever reason, you will be able to destroy them so you can claim the rewards and free up the Submarine. This doesn't apply to any type of safe.
  • There are currently 6 different Classified Items.

List of all items

Attack Plan

An Attack Plan

  • The Attack Plan can instantly complete any upgrade associated with the Armory, save for mines.

Building Blueprint

A Building Blueprint

  • The Building Blueprint can instantly complete any building upgrade.

Safes

The Safe fills up the player's storage of their respective types.

GoldSafe.png
WoodSafe.png
StoneSafe.png
IronSafe.png
A Gold Safe A Wood Safe A Stone Safe An Iron Safe

Strategies

General

  • Always send the Submarine on any dive location that contains mysterious items. It could potentially uncover one and give you a huge advantage in one way or the other.

Timer Accelerators

  • To get the most out of these items, they should be used as soon as the upgrade is underway.
    • For example, if a building upgrade would take several days, it can be used as soon as the upgrade begins to skip it. This practice is recommended on buildings critical to your defense/offense such as the Shock Launcher and Landing Craft since they can't function normally when upgrading. Secondary priorities include the Armory, Sculptor, and Weapon Lab. It is not recommended to use them on any other buildings such as Resource Storages/Producers, Gunboat and Radar as it effectively defeats its purpose.

Resource Refills

  • To get the most value, use them when their respective storage has been almost or completely depleted.
    • They should only be used provided if they could compensate for a resource shortage on an avaliable upgrade, which should be done right after to prevent them from being stolen.

Trivia

  • Classified items were inspired from the Magic Items in Clash of Clans, a similar Supercell title.
  • Safes are mentioned to be directly relevant to the Trader as she can somehow uncover hidden repositories in the archipelago for the player, implying that the item itself is merely a set of coordinates.
  • The Building Blueprint seem to be associated with the Blackguard. As the Trader also seems to be associated with classified items in general, it may support the theory that she herself is Colonel Gearheart.
    • It also implies that the Blackguard possesses extremely advanced construction technology allowing them to fabricate buildings with terrifying ease instead of beginning from scratch.
  • The Attack Plan's name is inaccurate, as in real life, a stolen attack plan would only give an advantage against hostile forces for a moment and not permanently, which it actually doesn't do in-game. A more accurate one would be "Technology Blueprint".