3-player Game
The 4-player rules are still valid, but:
Players must decide at the beginning of the game if they are going to use 4 or 3 neighborhoods (in which case neighborhood #4 will not be used). Using 3 neighborhoods will make the game more strained!
There are only three gems to win in each port (i.e. the three gems on each 'Ship' card; the large stone now only counts as one gem). The player holding a majority in a neighborhood now wins two gems; the second player wins one gem; the third player wins nothing. …