Thank you! :)
It does not need Wiimote. (but I recommend it!) It only needs a long stick for LEAP Motion Tool Tracking and fire button (default: Mouse click or Z key). I recommend White or opaque vivid color pen.
And, The appearance of the target stops on the way if you do not shoot down a target. A target continues appearing until the end of the music when you shoot down a target.
Please enjoy it!