Add a new rule, “City Sites”:-

Each Contractor is working at a Site, which may be either Earth, Mars, Moon, Ocean or Space, and which is tracked in the GNDT (defaulting to Earth, which may be tracked as “-”). Earth and Ocean are Local Sites, all others are Offworld Sites.

A Contractor may spend 1 Transportation to change their Site from a Local Site to another Local Site.

A Contractor with at least 5 Engineering may spend 2 Transportation to change their Site to any Site.

Whenever a Contractor changes their own Site, they must set their Infrastructure to zero.

To the “Resources” rule, add a Resource:-

* Infrastructure represents the physical buildings and facilities constructed at a site. It includes housing, roads and power systems. X units of Infrastructure may be written as XI, where X is the amount of Infrastructure.

In the rule “Deliveries” (if it exists), replace “Robots, Transportation, Colonists, Publicity, Biology and Engineering” with “Robots, Transportation, Colonists, Publicity, Biology, Engineering and Infrastructure”.