These are free music theory games from MusicTheory.net. Just click on the link to play.
Treble
Clef Note Game (notes in staff) - http://www.musictheory.net/exercises/note/beoyryy
Level 2 (ledger lines) - http://www.musictheory.net/exercises/note/brwyryy
Level 3 (key signatures) - http://www.musictheory.net/exercises/note/brwa9dy
Bass Clef Note Game (notes in staff) - http://www.musictheory.net/exercises/note/neoyryy
Level 2 (ledger lines) - http://www.musictheory.net/exercises/note/nrwyryy
Level 3 (key signatures) - http://www.musictheory.net/exercises/note/njia9dy
Level 3 for TUBAS only - http://www.musictheory.net/exercises/note/nyca9dy