Legos have come a long way since the first sets arrived in the U.S. in the early 1960s. What began as a simple child’s toy has mushroomed into an empire of theme parks, movies, and, of course, bricks.

Few toy lines have evolved and adapted while remaining true to its core simplicity that way LEGO has. Not only does it have decades of legacy behind it, but it has also grown from a few brightly ...