The wife of Thoth, Ma'at's name means "Truth", "Justice",
and perhaps even "Tao". It cannot readily be rendered into English
but "truth" is perhaps a satisfactory translation. Ma'at was represented
as a tall woman with an ostrich feather in her hair. She was present
at the judgement of the dead; her feather was balanced against the
heart of the deceased to determine whether he had led a pure and honest
life. All civil laws in Egypt were held up to the "Law of Ma'at",
which essentially was a series of old conceptions and morals dating
to the earliest times in Egypt. A law contrary to the Law of Ma'at
would not have been considered valid in Egypt.
In The Game
When you build an Altar of Ma'at, She bestows, through
the priests of Ra, a calming effect upon the city. As they pass by
houses, they lower the likelihood that the house will unleash a criminal.
The simple presence of the Altar reduces the city's overall risk of
crime breaking out.