From a common sense perspective these arguments seem to make sense. As a parent or teacher trying to motivate children to learn the things we think are useful for them, it is easy to look with some form of curious envy at how easily games seem to engage children. When realizing that these games present us with structures that we are unfamiliar with, it is easy to make the assumption that games are complex. Seeing a child progressing through a game becomes something truly extraordinary. We see children master what we think are complex systems and we ask ourselves what kind of mysterious features are built into games that make this happen.