atari2600land has posted an update of his Atari 2600 homebrew game “Jack and the Beanstalk” which is based upon a fairy tale with the same name.
Release notes:
Both options for troll movement of level 1 are now available via the right difficulty switch. A is following, and B is random.
http://www.atariage.com/forums/index.php?showtopic=118991&st=75