Complex sentence: It shipped with a software development kit (SDK) which made it possible to develop your own Mega Drive games, with a good example of this shown in the Puzzle Construction program which is mentioned in the "Software Development Kit" section.
Split into simpler sentences: It shipped with a software development kit (SDK) which made it possible to develop your own Mega Drive games. A good example of this is shown in the Puzzle Construction program which is mentioned in the "Software Development Kit" section.