I was looking at my analytics today and noticed that I had a large number of views on something that isn't one of my games. Usually on the graph all the games are separated on individual selectable items showing which game got what views. Today I noticed I have about 40 views on a bar that does not have a label and that I cannot select. What does this mean?

Here's a screenshot of what I mean in case that helps.

The unselectable portion is "everything else": those games that didn't get enough views to warrant their own bar, so were lumped together.