I founded it some time ago and I like it because I can play song with my computer keyboard like on a real piano.
The best thing is that you can download millions of songs because the game supports any MIDI file and is totally free.
Just for Learning Pack you need to pay 25$,but this is not necessary if you want to learn on your own.
If you already have an electric piano with MIDI export, you can connect your Synthesia with keyboard and use it like before,but with a real instrument this time.
Each song can be Played with a lot of different instruments(you still playing on your keyboard,but the song will sound like selected instrument)
The score can be saved in your computer or share your progress with other users or friends.
I'm on 3rd place on "Sonatina Piccolina" (online score)
You can download it here:
LINK
