Everyone needs to cool off for a bit....
The level of ignorant arguments and personal attacks here has to stop or the thread WILL be closed.
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For the Record There are only 3 games on the Xbox console that actually REQUIRE the 2nd layer, however all Xbox games are pressed on DVD-9 discs. SOME games spill over on to the 2nd layer but the data there is usually unnecessary stuff such as foreign language sub titles, foreign language videos, demos and videos for other games on the console, etc. Which could easily have those things stripped out without effecting the game as you play it one iota.
Ninja Gaiden for example takes up over 5GB normally however all of the FMV is on the disc twice, once in Japanese and once in English. The Japanese videos are actually impossible to ever view in the US version of the game so they're essentially useless. Stripping out the Japanese video doesn't effect a damn thing and the game instantly drops down to just under 3GB... if you stripped out the english FMV as well (so perhapse the cut scenes could be done with the game engine instead) the game would come pretty close to fitting on a CD.
The few games that actually REQIRED the 2nd layer were:
1. Jade Empire - Because the game is massive and used a whole lot of audio. Even still it barely spilled over on to the 2nd layer and with a bit of compress on the part of the developers it probably could have fit on 1 layer.
2. Rallysport Challange 2 - Again because the game is massive, much like Jade Empire it also barely spills over on to the 2nd layer and could have fit on a single layer if the developers spent more time with compression.
3. Metal Gear Solid 2: Substance - The "Substance" version of MGS2 on the PS2 included a 2nd disc with behind the scenes videos, bonus levels, and a whole lot of other Fluf to warrant a re-release on the PS2. This is the ONLY version availble on the Xbox and rather then split the special features off on to their own DVD They decided to put both discs on a single DVD-9. It fills almost the whole DVD-9 because of it. If you could split the game out (and there are some people who have) it comes in WELL under the DVD-5 limit. This is a difficult task however because they compiled all fo the data into a single giant file on the disc that requires a hefty amount of hand crafting to split apart.
To my knowledge (unless anything has come out recently that changes this) those are the ONLY 3 games that actually require a 2nd DVD layer, everything else can fit without problem on a 4.7GB DVD-9 and most take up considerably less space then that, some even fitting on a CD without FMV.
If you're interested in more info on game deletions you can find it here:
http://forums.xbox-s...howtopic=140537I don't think I need to provide a source for this info because I AM A SOURCE, I've backed up each of the above games personally and I'm familar with how much space the take up what they fit on and what they don't fit on.
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As for my personal opinion. I'm not a game developer, I am however a software developer and one who develops 3D applications. My company manufactures aerospace parts and I write the software the the engineers use to design those parts.
My software including fully detailed CAD drawings, Solid 3D models, and part data (that when printed averages between 20 and 30 pages) for every part we've made over the last 8 years (about 16000 total) only takes up about 6GB of space... THATS IT.
22GB is a monstrosity and in my Opinion even the worst code in the world wouldn't take up that much space. The ONLY way I could see anyone filling up that much space is with Video files... Video is easily the biggest space hog, followed distantly by Audio... followed far far distantly by everything else.
If compressed appropriatly 22GB it's probably about 6 hours of HD video about 30 days worth of solid unique audio and I can't even fathom what anyone could possibly write in code, or create in 3D models, or textures that would take up that much space. You would need an army of programers and artists the size of all of MS working for years to make that much content. But 6 hours of video could easily be done by a few artists in a relativly short amount of time.
If the game really does take up 22GB most of it will probably be unplayable video that you just sit back and watch.
... Speaking from experience that is.