Design bureau

The design bureau (formerly known as the construction bureau) allows you to research upgrades to your strategic points (machine gun, mortar, field healing, and victorious courage). This can greatly improve their effectiveness in battle, but it requires a significant investment of flywheels and resonators. Many of the upgrades available at the bureau require gold to purchase.

The gallery below shows the design bureau at all different levels.

The construction costs for the building itself are as follows. It can be built once you reach player level 18. It is built with normal resources, but once it is constructed, it does not require any steel or fuel to upgrade, only flywheels and resonators.

For a list of the available upgrades and their effects, see the individual pages for machine gun, mortar, field healing, and victorious courage. You can also equip skins for the various strategic points, which are also listed on the individual pages.