Too bad there's no online mode in this version.
It looks the same as the Wii version, but this one on Ps2 has only 1 problem: No online mode. The game is good, I enjoy it every time, but the difficulty at the beginning makes you pause the song 2 or 3 times, (A good example: Through the fire and flames) but you get used to it.
The multiplayer adds the battle mode, not so fun unless you're a pro; becuase a battle between two begginers is short, a difficulty change and game over.
The graphics are better than GH 1 and 2, but on ps2 and wii (Not sure if ps3 and 360 have it too) there's a a weird thing when using the star power, the character stays in his pose and then BAM!, the character appears at a closer spot on stage...but who cares!, the game is fun and I love it!