Some long games, such as Bannochburn Legacy, had more than 500 lines of code. To illustrate the style of these compendiums, here is the Table of Contents from Hartnell's Giant Book of Computer Games http://www.devili.iki.fi/library/publication/119.en.html: * Hartnell also wrote several how-to books about various genres of computer games, including Giant Book of Spectrum Games published in 1983, and also edited others, including Pete Shaw 's Creating Adventure Games On Your ZX Spectrum, also published in 1983. They were designed so that a beginner could, using his programs as examples, intuitively learn the BASIC programming language.
Hartnell
Pete Shaw