Both rappers are bringing their music to the newest offshoot of Activision’s successful $2 billion Guitar Hero franchise. The game, played with a turntable-shaped controller, is due out this fall for PlayStation 3, PS2, Xbox 360 and Wii (no price or rating yet).

A limited edition comes with the rappers’ exclusive new greatest-hits CDs, possibly including previously unreleased tracks, plus an advanced version of the controller, a DJ stand and metal traveling case. Jay-Z and Eminem will serve as consultants to Activision and the game’s developer, FreeStyleGames.

The complete list of tracks the rappers are providing is still being worked out. Jay-Z plans on including Izzo (H.O.V.A.) and Dirt Off Your Shoulder for sure. Also possible: tracks from his in-the-works Blueprint 3 album. “I have a ton of content, I just need the pipeline,” he says. “I love the freedom of (DJ Hero). I could wake up tomorrow morning with the idea for a song and call the guys at Activision and start working on getting it out.”

Eminem is more cryptic about his contributions. “I don’t want to give away any surprises yet,” he says in an e-mail interview. “DJ Hero will include my music, and I’ll be providing additional material as downloadable content by the end of the year.”