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|Level 1||Level 2-3||Level 4-5|
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|Level 6-7||Level 8-9||Level 10|
- The Gold Storage is used to store Gold.
- Gold is used in upgrading troops, Gunboat Weaponry, Mines, Boom Mines, exploring the Archipelago, training troops, starting Submarine dives, and starting an attack.
- Unlike some other real-time strategy games, if this building is destroyed during a battle, the attacker does not necessarily gain some of the Resources in it. The only way Resources can be taken from it is if the attacker destroys the Headquarters.
- Initially, the Gold Storage is a wooden box with a wooden padlock on the front, and gold coins are spilling out of it. The box is resting on three wooden planks and the side has a sign with a yellow dollar symbol on it.
- At level 2, the Gold Storage gains wooden supports, reinforced corners, and an extra piece of timber underneath. There are more coins spilling out of the front.
- At level 4, the reinforced corners turn gray, and even more coins are spilling out.
- At level 6, the Gold Storage becomes a metal box with stone edges, with even more coins spilling out. The padlock's chain gains a color similar to the metal parts of the building.
- At level 8, the sides are a patchy gold-colored metal, and the front and back edges are reinforced with more stone. The base is also made completely out of stone, and the padlock turns golden.
- At level 10, the Gold Storage is made completely out of golden-colored metal with a stone base. It changes to resemble a more vault-like structure with a circular door.
- You do not need to have the necessary level of Gold Storage for upgrades if you buy Gold with Diamonds, or obtain excess Gold through the Trader.
- The Gold Storage is the only storage which does not change appearance as it gradually fills up. The Wood Storage visually fills up with planks; the Stone Storage visually fills up with stones; and the Iron Storage fills up with iron ingots.
- There's an achievement which is called War Chest that gives a total of 60 diamonds upon upgrading one Gold Storage to level 10.