Add a sub-rule Mortgage to Property:

At any time, a Player may give up ownership of a Square. By doing so e gains an amount of B$ equal to half the value of that Square and the referred Square lose its Beige color and ownership.

At any time, if a Player owns at least one Square and holds a negative amount of B$, e must give up the ownership of the most valued Square e owns.

To the purpose of this rule, the value of a Squares shall be considered the amount of B$ a Player should spend to acquire or take over that Square.

From Debtor’s Prison, delete:

If a player Owns one or more squares and is moved to the Gaol, all squares e owns lose their Beige color and ownership, and e gains an amount of B$ equal to half the value of that square as calculated by the “Property” sub-rule, rounded down.