I bought this game because my boyfriend's children liked their Guitar Hero: Aerosmith. I thought, "well, probably nothing for me, but if I buy it with guitar, they'll have two guitars to use." Well, about five minutes after receiving the game, I realised how off my thinking was! This game is so much fun! We ended up playing it with three people at a time, one singing and two on guitar (bass and lead) and I haven't laughed that much in a long time. It is such a great way to spend a family "game night". I love the way you can challenge yourself but can also do cooperative play and help those who are maybe not as good as others. So much nicer than making someone feel like they did poorly and ruined it for the rest!
As someone who isn't very "up" on hard rock, I do have to say that the number of songs I actually know is less than 10. On the other hand, it lets me listen to music I otherwise wouldn't listen to, and that's nice, too. It's a good way to find more music I like.
All in all I can recommend this game to anyone who likes rock music and wants a good, fun game.