During this waiting period, the group kept busy by releasing a slew of mixtapes and appearing on soundtracks to films such as "Bad Boys II". They also contributed two songs ("Ground Zero" and "Put it in the Air") to the popular game "NFL Street 2", and another ("Fire") to "Fight Night 2004" - another video game. They also contributed Ante Up to the third installment of the popular "Midnight Club" video game series. Also in 2004, M.O.P. joined the successful American rap rock band Linkin Park on the second stage of the Projekt Revolution Tour.