Guitar Hero's newest game - falls short of the bands reputation.
The interface of the game is very similar to that of Guitar Hero 3 - same graphics, mainly the same characters, same interface on the fret board side of things - but there's a few changes between this and Guitar Hero 3.
First of all the Hammer ons and Pull offs are closer to that of the second game in the series - however not quite as harsh. If you've only played Guitar Hero 3 then it might take you a while to get adjusted, but once you're there it's just the same as the 3rd game.
The game features around the band Aerosmith as the title suggests - in the career mode you "relive" Aerosmith's career, starting from their first gig and beyond. There's 6 different sets of songs - each containing two "warm-up bands" then 2 Aerosmith songs followed by a an Aerosmith encore. This is a bit of a disappointment when GH3 and GH2 both had 8 sets.
This game also features a few bonus songs - around 10 or so, all of which are performed by Aerosmith or members of the band. There's no plans for DLC content on this game and I believe the final song count is only 42 - And two of the songs are the same however are just different versions (Walk this way).
Another change is in multiplayer - There's no co-op career this time round which is kind of sad. A huge plus point to the games multiplayer is Pro-Face off has been improved, no longer do you both need to play the same difficulty, great for casual - competitive play,
The Achievements in this game are a huge let down, after one song I had 50 points. They're just far too easy - which may give hope to those players who thought GH3's were too tough. Although as with a lot of things in this game - there have been improvements with the achievements now stackable, so you no longer need to beat it on easy as doing it on a higher difficulty will unlock that achivement.
Overall this game gives you too little for too much. If you're bored of GH3 and want more songs to play - Get Rock Band (solus) and enjoy that, much better value for money. It brings a lot of good things forward but just fails to deliver on others.
The only people who'll enjoy this game are hard core Guitar hero fans and casual Guitar hero fans who also happen to like Aerosmith.