Rock Band - Rock Band is a Rhythm Music and Single and Multiplayer video game created by Harmonix and published by MTV Games.
Osu - Osu is Music, Rhythm, Single and Multiplayer video game developed by Dean Herbert.
Clone Hero - Clone Hero is a free rhythm game, which can be played with any 5 or 6 button guitar controller...
Michael Jackson: The Experience - Michael Jackson: The Experience is a Rhythm, Music, Single and Multiplayer video game created and published by Ubisoft.
Frets on Fire - Bonus content.
O2Jam World - The classic O2Jam rhythm game, reworked for the browser. No downloads required - playable on Windows & Mac