Mario Rock World is formerly a GMK project by KamekYay know as Mario Guitar World but the sequel (Mario Rock World) has since been moved to become the 1st game, this game will now feature 3D graphics and Guitar, Drums, Microphone and Bass if players wish to play Microphone career they will need to connect with a microphone from either the guitar hero or rock band series other guitar hero/rock band instruments will also be compatible.