The Leeghwater Project Expansion adds the following:

A new faction, the Netherlands, uses Jan Leeghwater’s expertise in water management, adding even more water to your dams.

The External Works mechanic, a set of powerful new tiles that can be obtained from a new action space. With them you will be able to perform many actions, but be careful. To unlock the External Works power you will need to burn the required amount of Concrete Mixers and Excavators rather than just assign them to the Construction Wheel.

Personal Building mechanics. You’ll be able to use a combination of five Building tiles, each with a different, powerful effect that can be activated by your engineers.

Two new Executive Officers made to enhance the External Works and the Personal Buildings.

Three new Advanced Technology tiles dedicated to the building of Personal Buildings.