Well Oblivion and FO3 barely had any cinematics so no FFXIII will not fit in one disc.  I'm thinking it'll go all the way and be in 4 discs.  Character designs in each disc cover- the works.

What OllyOxenFree said. Final Fantasy XIII will feature a ton of FMV sequences, each of which will take up a lot of disc space.

It's possible to fit FFXIII into an N64 cart.
 
You just take out voice acting and use MIDI music.
 
It's pretty pathetic games today can't even fit on a 4.7 GB disc.

On a purely theoretical level sure it could it fit, below is (low quality) screen shot of an FPS called .kkrieger  for which the file size is 96kb. According to the creator to store this game the way that most games are stored would take between 200mb and 300mb's.

Basically im saying I think through a labour of love, impossible amounts of familiarity with the Xbox 360 hardware and disks that the 360 uses and plenty of time then sure it could fit onto one disk but considering other examples of the genre currently (and that this is the first new FF on next gen consoles) then is not likely to fit onto one disk if they want to have the same experience as the PS3 version (of course they could just make it like they made last-gen games and emulate it to fit it onto one disk but who would buy that at this point? Plus all the extra resources makes no sense).

Probably not. As other people said, the cut scenes will force it onto two discs.

No, otherwise they would've done it.

Im sure it would be possible, with compressing the shit out of the game and making it clearly look like the inferior port by a mile, hence why they are not doing it.

With FFXIII you are looking at something on the epic scale of say Lost Odyssey. Actually it's probably bigger than that. So no I don't think they could fit the entire game on one disc. Well they could, but they would have to compress everything down so much that it would probably look like a PS1 game by the time they were done and I don't think anyone wants that.

It could but all the cut scenes would have to be rendered in-engine and not FMV.  Square is notorious for using a lot of FMV.

No, play it on the PS3, it will be a better experience. 

" No, play it on the PS3, it will be a better experience.  "

No, FF uses cgi cutscenes like crazy

They will Probably do it like forza did by giving you the option to install the disks.

In case anyone cares, the cutscenes are going to be 1080p on the blu-ray.

PS3 version will have lossless audio for you audiophiles.

Fallout 3 was 3x smaller than oblivion so....

If Mass Effect is coming out in two discs, there's no way FFXIII will come out on one.

" In case anyone cares, the cutscenes are going to be 1080p on the blu-ray. "

FF is too epic for one wimpy Dual-layer

How much CGI will Final Fantasy XIII use? I think people are overestimating the amount of CGI that will be used, because nowadays, it is mostly heavy action scenes with massive participants that use CGI movies, because all of the other stuff can be done In-game these days.
 
Final Fantasy XII did not have THAT many CGI scenes, nor did Lost Odyssey. 
 
Still, I hope (and  believe) it will come on more than one disc. JRPG disc swapping rules.

Even if it could be compressed to fit, S-E wouldn't allow it because it would tarnish their reputation for pristine visuals. Disc-swapping is nothing new to them though.

I think SQUARE ENIX said they're going to TRY and fit FFXIII into 3 discs.

I think they should just go ahead and do 4 discs (maybe even more?).  Disc swapping is not a huge issue as you just have to do it once every...10 hours or so I would say.

" How much CGI will Final Fantasy XIII use? I think people are overestimating the amount of CGI that will be used, because nowadays, it is mostly heavy action scenes with massive participants that use CGI movies, because all of the other stuff can be done In-game these days.  Final Fantasy XII did not have THAT many CGI scenes, nor did Lost Odyssey.   Still, I hope (and  believe) it will come on more than one disc. JRPG disc swapping rules. "

" @RaikohBlade said:

" No, play it on the PS3, it will be a better experience.  "

Just curious, how so? I'm sure it is going to be great on either platform, but how is the PS3 version better? Aside from the fact that it will have less disks. I also plan on getting the PS3 version, by the way.  Is it possible? I'm sure it is, but very unlikely. It would need to be compressed, which isn't a bad thing. Games have been compressed onto one disk before and played well. "

" @Karmum said:

" @RaikohBlade said:

" No, play it on the PS3, it will be a better experience.  "

Just curious, how so? I'm sure it is going to be great on either platform, but how is the PS3 version better? Aside from the fact that it will have less disks. I also plan on getting the PS3 version, by the way.  Is it possible? I'm sure it is, but very unlikely. It would need to be compressed, which isn't a bad thing. Games have been compressed onto one disk before and played well. "

I believe that it is being developed for the PS3, then is being ported to the Xbox 360. Therefore, there is a good chance that the PS3 version will be superior in some ways. Granted, these differences may be very minor, but they may still be there, like what happened with Bayonetta. Also, less discs means less hassle. Overall, the PS3 version is the one to get. Not that the Xbox 360 version will be bad, just saying that the PS3 version will be the better one.  "

It's possible to fit FFXIII into an N64 cart.  You just take out voice acting and use MIDI music.  It's pretty pathetic games today can't even fit on a 4.7 GB disc.

It's actually being developed on a PC platform, so that it can easily be ported to any system.

How are those of us who haven't even touched the game supposed to know?

Haha if it comes on 2 blurays that would be crazy

" @RaikohBlade said:

" No, play it on the PS3, it will be a better experience.  "

Just curious, how so? I'm sure it is going to be great on either platform, but how is the PS3 version better? Aside from the fact that it will have less disks. I also plan on getting the PS3 version, by the way.  

hell no.

Well considering Lost Odyssey took up 4 discs and FFXIII looks better and will possibly feature a couple fancy CGI scenes along with all the other high end bells and whistles they always put into a Final Fantasy game I get the feeling that it will probably be quite a few discs on the 360. Four discs at a minimum wouldn't surprise me at all.

if they removed every bit of CGI...then maybe.

 Well considering Lost Odyssey took up 4 discs

" @get2sammyb said:

" In case anyone cares, the cutscenes are going to be 1080p on the blu-ray. "

  And the gameplay is rendered in 720p on PS3. I cannot help but wonder if the 360 version will be 1080p on both gameplay and FMV. I think it will certainly come on multiple discs...     In answer to the OP, no, not likely given the content of the game. "

"

 Well considering Lost Odyssey took up 4 discs

Considering Lost Odyssey when it comes to technical aspects is as amateurish as you can get, and Blue Dragon came shipped on three discs, I think it's safe to say that Mistwalker's 360 efforts should not necessarily used to judge this particular situation. ;)  I think what takes up more space than people might think is the audio data; the PS3 version has uncompressed audio. Who knows how much space is saved when you encode that into DTS or DD5.1 for the 360 release? "

"

 Well considering Lost Odyssey took up 4 discs

Considering Lost Odyssey when it comes to technical aspects is as amateurish as you can get, and Blue Dragon came shipped on three discs, I think it's safe to say that Mistwalker's 360 efforts should not necessarily used to judge this particular situation. ;)  I think what takes up more space than people might think is the audio data; the PS3 version has uncompressed audio. Who knows how much space is saved when you encode that into DTS or DD5.1 for the 360 release? "

Only if you super glue all the discs together.

Probably not.  But X-Wing came on 5 floppy disks, it didn't make it any less awesome.  Baldur's Gate was on 5 CDs, BG2 4 CDs.  I'm pretty sure there is a direct correlation between the number of disks and how awesome a game is.
 
If you're wondering how many copies of X-Wing you can fit on a single blu ray, let me tell you, it's approximately 7000.

Oblivion and Fallout 3 have massive texture repetition.
Cave, Elf ruins, Ruined fort, Oblivion gate.
Cave, Factory, Subway, Sewer.
That's why they fit on one disc.

I own a Kuro Pioneer with a full 7.1 audio setup.  I had no choice but to get the PS3 version and it was worth it.  MGS4 made a big difference with the audio setup, and Final Fantasy XIII does too.  
 
It makes a HUGE difference if you have a nice tv and nice audio setup...and I mean huge.  If you got the setup, get the PS3 version.  No questions.

Don't even understand why this is an issue. Is changing a disc once every 10 hours that big of a deal?

I read somewhere, where they looked at the contents of the game on blue ray and the gameplay is 8 gigs of data. That would probally fit on one disc, however the cutscenes, seems to take two additional disc since the game is cutscene heavy.  
 
Here is the quote 
 

"The BD containing the game amounts to 38GB, whilst the Xbox 360 version has already been confirmed as being packed onto 3 DVD discs (offering an absolute maximum of 25GB or so).

Add to this the fact that each disc will have to duplicate key game resources and the amount of space available to the Xbox 360 version drops even further…

However, concerns over a crippled Xbox 360 version are misplaced – of the 38GB of data on the disc, only 8GB is game data, the rest being given over to sumptuous CG movies (see above), leading to the promise that the in-game elements will be “mostly” identical, whilst the movies simply enjoy far lower data rates to compensate, an admittedly dubious consolation."    

" @EndlessMike: Some games handle it badly, imagine having to change disc every time you want to go back to an old city. SO4 had you changing disc every time you switched planet and during endgame, I ended up switching discs every 5-10minutes trying to craft stuff for achievements... I gave up, was definitely not worth it for that game. Was a bad enough experience that i'll be getting it on PS3 regardless of the differences between versions. "