Best in the series so far.
Gameplay: 9.9/10- In Quickplay,you play your favorite songs with your favorite instrument and hit(or sing) notes as they pass the line.You can also go online and team up with other people. And don't forget about competitive mode either(not explaining because you already know about it). The roadies from GH5 return along with 2 new roadies for assistance in quickplay and competitions. Party Play is here, too, but this time you can set up a setlist with a Nintendo DS. Also, there is a new quest mode(story mode) where the player plays as 8 characters(9 counting the post-story,a.k.a, domination mode). Every character has a special power(such as earning 100% star power with one star power passage or having a 6x multipliyer instead of 4x) that helps them earn stars at the end of each song on that character's setlist) after earning enough stars in total, your character's power is improved and the character him/herself transforms into a "warrior". After completing the story mode, domination mode is availabe, where the player can go back to the character's setlist and get a maximum of 40 stars for each song, unlocking more stuff.
Story: 8.5/10- After losing a battle with the beast, the Demigod of Rock is imprisoned and sends an S.O.S. After progressing through quest mode, the 8 heros come together to fight the beast and free the Demigod. After a few days, you should beat the primary stuff on the game
Sound: 9/10- Rockin' out is great but you have to turn the volume up on the TV to actually hear the music.
Graphics: 9/10- Good, but could've been a bit better.
Overall: 9.5/10- I love this game and ALL GH fans should pick up a copy as soon as possible.