Guitar Hero 3 is a good game, that lacks some things for it's Wii version
Well that was the enjoyable stuff, now for the bad stuff.
First of all if you buy the Wii or PS2 versions of GH III you'll notice the grapics are poor compared to the 360 and PS3 versions. Yes the graphics are HD on the 360 and PS3 but the Wii and PS2 can display way better graphics than unrealistic looking flames (in the Tiki Party stage) and horrible hair movements (keep a look on the lead singer's hair, it all moves at the same time) I've seen much better for these consoles, graphics wise. Playing the guitar is fun, but unless you have guitar playing skills (unlike me) you'll struggle through this game as its difficulty oddly speeds up in between difficulty levels. It really got frustrating after completing normal mode then entering hard mode. Some of the notes don't match with the notes being played, and practically every old song is a by a cover band. There's also some registering problems with the Wii guitar. Sure it's great that you dont have to use another set of batteries for the guitars, but sometimes the whammy bar stops functioning. This may seem minor, but it gets frustrating when your opponent gets the whammy attack in battle mode and your whammy bar stops working. You can fix it , sure, but its a pain to do. The final groan is lack of downloadable content. No new songs, patches, or anything to improve the game comes with the Wii version, and that's sad.
So as I said Guitar Hero 3: Legends of Rock is an ok game, but it lost more than it can pay back for in the long run.