Best of Sierra: 12 Top Games
Either the compilation should be called Best of Sierra - 13 Top Games or King's Quest is not a Top Game.
Why? The Top Games relates to the title games of each issue. There are two title games in each issue and six issues in this box, all in all are 12 games. But issue 2 actually contains three games, besides the two title games, there is also a bonus game included, King's Quest. So there are actually 13 games in the box.