The gameplay is quite unique. You can't directly move Mion, but instead guide her motions as a firefly. This was clearly designed for the ps vita touch screens but it translates pretty well to mouse controls.

The story is quite touching and the overall presentation is very beautiful. It's best to experience that without giving too much away about it; it's quite impressive how it unfolds without any dialogue. There are some interesting and well thought out puzzles as well. The world feels well realized.

My two complaints are that some puzzles require more precision than could be reasonably expected from the control scheme and that two areas have falling obstacles that are semi-random and will kill you with little warning.