Konami's had a long history in the rhythm game genre. They're most well known for their Dance Dance Revolution series, but have had a good bit of success with their Karaoke Revolution games on the home consoles as well. In Japan they've had guitar and drum games for years, but they've never brought those games to North America. With the success of the Guitar Hero and Rock Band franchises though, it's clear that Konami wants to get back into that market. Rock Revolution is what they're jumping into the game with.