Despite not being released in yet, North American of EA/MTV's rhythm-action title passed 1.5 million copies for the fourth quarter, which ended on March 31st.

This is particularly impressive given that the game is more than a little pricey, bundling in a copy of the game, a guitar, a mic and a drumset. It is however compatible with Guitar Hero's axes (but not on the PS3, controversially).

EA's full-year results revealed a fourth quarter jump in revenue of 81%, the firm taking 1.13 billion USD prior to March 31st.

More on this soon.

By Luke Guttridge