This is a pot pourri of various  programming books detailing many sample games and program in BASIC and machine code for the C64, Adam, and others.

The book of Atari Software 1983 is a very interesting book, detailing many of the most memorable games and programs from that era.  Also Consumers' Guide: Personal Computers and Games is a nice book from about the same time, showing a brief history of all the early computer systems, and having a few pages of the best educational, adventure, action, and fantasy computer games (Wizardry won for best fantasy, of course).