This is Guitar Hero at its absolute best. There's a great custom charting community with thousands and thousands of charts available in every musical genre from classic rock to progressive metal to J-pop and you can also get official rips of songs from all the old Guitar Hero and Rock Band games. You can play with a keyboard or one of the many various Guitar Hero/Rock Band controls that are supported, the latency is great and if you download Hamachi you can even play with friends. Seriously, if you're even a casual fan of rhythm games this is the best one out there that can provide hundreds of hours of entertainment, a true classic of the modern age.