four extra games included in this is the source code for four extra games unfortunatelyonly the source code (including commentsis in this without any detailed explanation of the code by nowyou can play these games and figure out how the code works by looking at the source code and comments the games areflippy an --othello|clone where the player tries to flip the computer ai player' tiles ink spill --flood it|clone that makes use of the flood fill algorithm four in row --connect four|clone against the computer ai player gemgem --bejeweled|clone where the player swaps gems to try to get three identical gems in row if you have any questions about the source code in this bookfeel free to email the author at al@inventwithpython com buggy versions of these programs are also available if you want to practice fixing bugs