| For Guitar Hero I and II, it was based entirely on your score. It's compared against the "base rate" of the song, where you hit every note and hold every phrase for full length at 1x multiplier.
Three stars for completing the song, four stars for doubling the base rate or more, five stars for tripling the base rate or more. The average multiplier doesn't matter, but it's a good indicator for how off you are from getting the 3x the score for the five star. Ideally, you'd want 4x throughout the song and save star power for the areas with lots of notes and lots of chords; losing your multiplier is bad, so if at all possible don't spread your mistakes throughout the song (that would result in a measly 1x/2x throughout the song). |