They should make a Dream Theater: Rock Band

They may not hold the legendary status that The Beatles do, and they may not have as many fans as Green Day, but maybe it will gain a following like Demon's Souls did. The "wankery", for lack of a better word, might fit well for those who want a more challenging Rock Band game. Another band could easily offer the same challenge, but no other band is as iconic as Dream Theater are for their "wankery". If they included Liquid Tension Experiment stuff into the mix, it could be a truly crazy game.  A lot of their music has a pretty wide span of difficulties as well.
 
This one song pretty much sums everything up: 
  

I'm sorry, man. But I fucking hate Dream Theater! Liquid Tension Experiment is a little better, because I don't have to listen to that gay bubblegum pop sounding voice of Labrie. Still the band features "musicians" who live by the rule; "The faster you play, the better it is". That is Petrucci at least. It's just too bad that the legend from King Crimson, Tony Levin plays with those guys... He is way over their league. 

Petrucci tends to be less tasteless than Dragonforce though. He only goes uber-fast during solos and they have a lot of slow songs as well. Dream Theater has always been more about the fucked up time signatures than the speed. Although this game would be targeted at those who want a game with a lot of "wankery" as I said.

I'd buy it

No more band games! Stop giving Harmonix ideas! They already have some Dream Theatre DLC which is pretty good, they should come out with more.

The reaction to that would be "Who?"  and nobody would buy it.

YES!! I've actually thought about this a couple of times
 
They have amazing songs but man those songs would be hard to play, honestly though, I would rather want more DT DLC to come out, I've bought the little that is out now but I want more
 
Also just wanna say, I'm a huge Green Day fan aswell, buying that game soon

I guess the DLC would work as well.

Not Racer X /10. Try again pls.
 
 

 
 
Checkout that hot bass action. Also. paul Gillbert *swoons*

I'd totally buy it, on every single instrument it would be challenging and complex,  Portnoy is like the greatest drummer (talent wise) at the moment in my opinion and Petrucci can play suck a variety of stuff.. and don't even say that he's all about speed, he's anything but, he's all about technical skill. 
 
Plus if you pop in RB3's keyboard it will be truly awesome 
 
But then again I am kinda like.. Dream Theater's biggest fan so I would say it'd be an amazing idea.. 
 
tbh it's never going to happen though

I would buy that if they made it. 
But what would really be cool is if they released a Rock Band game with all the different songs I like. 
Then I would be playing that game again and again. Sure there might not be other people who would buy it but see if I care

I really enjoy Dream Theater.  I far prefer Liquid Tension but they are both a delight to listen to.  I do not think it would ever happen though as there just isn't a large enough audience for it.  On that note, I'd love to see one with all Buckethead and the countless side projects he has (Les Claypool on the bass would be tough on the current controllers lol)