8/10
The graphics are simple but pleasant to the eye, the color scheme is good and consistent.
The game concept reminds me of dance dance revolution style games except that you can have the same fun using a mouse, the only problem is that i found a detection bug (hope you can fix it) where some movements are not detected and make you lose instantly.
Maybe in some time you could make a replica on this game on a more powerfull engine and maybe even make a competitive / local mode.
Wish you luck!