Add the following as a new rule, known as “Keeps”

Each player has a publicly tracked Keep. Each Keep has 8 publicly tracked and ordered slots, each of which may contain up to one infrastructure. Defensive infrastructure may only be placed in the first three slots of each keep.

If https://blognomic.com/archive/that_one_video_game_i_really_liked passed, append the following to the end of the rule “Keeps”, maintaining a single paragraph:

Each Player’s Keep is considered to be located at the pod which is their chronologically first base, if they have one. A player may not add infrastructure to their Keep’s slots if they do not own a pod which is not their chronologically first Base.