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Crash Bandicoot 2: N-Tranced

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Title Screen

Crash Bandicoot 2: N-Tranced

Also known as: Crash Bandicoot Advance 2: Gurugurusaimin Dai Panic!? (JP)
Developer: Vicarious Visions
Publishers: Universal Interactive Studios, Konami (JP)
Platform: Game Boy Advance
Released in JP: December 4, 2003
Released in US: January 7, 2003
Released in EU: March 14, 2003


CopyrightIcon.png This game has hidden developer credits.
DevTextIcon.png This game has hidden development-related text.
MusicIcon.png This game has unused music.
DebugIcon.png This game has debugging material.
RegionIcon.png This game has regional differences.


Crash Bandicoot 2: N-Tranced is the second Crash Bandicoot platfomer game for Game Boy Advance.

Debugging Features

Elementary, my dear Cactus.
This needs some investigation.
Discuss ideas and findings on the talk page.
Specifically: I think there's more debugging features built into the game besides a speed modifier. One will have to look and see what there is, if anything else really does exist. According to HCS forums, a music debugger can be loaded by hacking the Current Level Identifier (03007DA8:XX). There may also be debugging material left from The Huge Adventure/XS.

Gameplay Speed Modifier

Hmmm...
To do:
Find the offsets of this and get codes for the Japanese and European versions.

By setting 0x0200014 in the RAM or 0x7FBD18 in the ROM to a non-zero value in the US version, or using GameShark SP/Codebreaker code E99B8028 EC01 on the US version, you can double the speed the game runs at. However, only visuals run at that speed - the audio still plays at the normal speed. As well, setting up a link game is impossible, as either game will fail to recognize each other, unless both games are using this code.

Sound Engine Debugger

Hmmm...
To do:
The fact that this exists proves that there is some kind of way to access other errors or potential menus for testing. Look into this.

If one modifies the engine in some way, or goofs up in programming it, and the engine doesn't like it, it'll actually spit out an error! The following error was generated by modifying the pointer to the sound table so that it read garbage data.

Crash2 NTranced GAX Sound Engine Error.PNG

Check the below section for a list of potential errors that can show on this screen.

Development-Related Text

There is all sorts of development-related text for the GAX Sound Engine present in the rom. Present at 0x6BEFD0 in the US release:

Test....Prototype...Standin.Demo....Single..Double..Triple

The following text is from offsets 0x51CBD0-0x51CDB4 in the Japanese version:

GAX2_INIT

Related to initiation of the sound engine in the game, the GAX Sound Engine by Shin'en Multimedia.

OUT OF MEMORY

Just after the above text, a warning signalling that the sound engine has run out of memory.

GAX2_NEW

More sound engine-related text.

PARAMS ARG IS NULL

Yet more engine text.

GAX2_NEW_FX.FXPARAMS ARG IS NULL

And even more...

WHEN USING DIFFERENT FX_MIXING_RATE, FLAG GAX_FX_REVERB AND GAX_HALFRATE_FX ARE NOT ALLOWED.

Some kind of comment on what the engine can and cannot do.

GAX2_JINGLE.GAX_NO_JINGLE FLAG IS SET

Some kind of warning.

GAX_IRQ.GAX_PLAY HAS NOT FINISHED BEFORE GAX_IRQ. USE LOWER MIXING RATE OR LESS FX CHANNELS OR PUT GAX_PLAY IN VBLANK IRQ

Another player warning.

GAX_FX..YOU TRIED TO PLAY A SPEECH FX BUT HAVE NOT USED THE GAX_SPEECH FLAG WITH GAX2_INIT..GAX2_FX.FXPARAMS->FXID IS GAX_DEFAULT

Another set of warnings.

The following text is from 0x51CED4-0x51CF1D in the Japanese version:

GAX ENGINE V3.01 Sep 13 2002

The version of the sound engine, and its build date.

EXCEPTION. PROGRAM HALT...ÔÎQ.FUNCTION NAME:

A piece of debugging text, most likely for finding errors in the sound engine.

The following text is in the US version (offset unknown):

GAX Sound Engine 3.01 (Sep 13 2002) © Shin'en Multimedia. Code: B.Wodok

Just like above, the version of the sound engine, complete down to the date and version number. This also contains a copyright and the name of the person that coded the engine.

crash 1 <-> crash 2
crash 2 <-> crash 3

A string is buried in the ROM that shows the way that the games communicate. However, this also shows that there was the potential for a third Crash Bandicoot Game Boy Advance game, which ultimately never materialized. This third game is also hinted once the final boss is defeated.

Hidden Developer Credits

As is with most GAX Sound Engine games, the song writers' name is credited in the footer of the audio file.

"theme" © Manfred Linzner

From the main title screen theme.

"warproom" © Manfred Linzner

The overworld theme for the game, where one access all the various levels.

"persian" © Manfred Linzner

Used in desert-themed levels.

"volcano" © Manfred Linzner

Used in volcano-themed levels.

"fake" © Manfred Linzner

Used in the level vs. Fake Crash.

"ntropy" © Manfred Linzner

Used in the level vs. N. Tropy.

"egypt" © Manfred Linzner

Used in Egypt-themed levels.

"jaws" © Manfred Linzner

Used in the three wakeboarding levels when the shark approaches.

"drums" © Manfred Linzner

Used during invincibility.

"mayan" © Manfred Linzner

Used in Island Intro and in Atlas Sphere levels.

"cutscenes" © Manfred Linzner

Unused. Plays the previous games' opening cutscene song.

"bonus round" © Manfred Linzner

Used in bonus levels.

"evil coco" © Manfred Linzner

Used in the level vs. Evil Coco.

"ntrance" © Manfred Linzner

Used in the level vs. N. Trance.

"evil crunch" © Manfred Linzner

Used in the level vs. Evil Crunch.

"coco" © Manfred Linzner

Used in space-themed levels.

"cutscenes spooky" © Manfred Linzner

Used in cutscenes featuring the antagonists.

"cutscenes normal" © Manfred Linzner

Used in cutscenes featuring Crash and various other protagonists.

"wake" © Manfred Linzner

Used in wakeboarding levels, when the shark is not approaching.

Unused Time Trial Values

Hmmm...
To do:
Find out why it does this. Is it to prevent similar times when saving time trial records?

Time trials visibly count to the nearest tenth of a second on-screen, however, what isn't visible is that it counts to the nearest 100th of a second.

Unused Audio

cutscenes

The song "cutscenes" is a leftover from the previous game, The Huge Adventure. It's used in the game's opening cutscene.

Unused Text Coloring bit

Within the text engine, hex byte 0x02 can change the text to a white color, however, the only places white text appears is in text whose colors alternate, such as menu screens to show the currently-selected option. This therefore renders this byte unused because the color for the menu selector is programmatically changed.

Aku Aku's Invincibility

Through memory editing, it's possible to start a level with Aku Aku's third stage, rendering Crash invincible for the regular duration that getting three Aku Aku crates provides, if the level allows for him. However, because Aku Aku's stage counter cannot be set to a value higher than 2 unless you hit an Aku Aku crate within a level (And it resets to 2 if you finish a level while invincible), this feature goes unused. The same routine responsible for this, however, does ensure that if Crash has his first or second stage, he keeps it.

Evil Crunch

While it is impossible for Crash and Evil Crunch to ever make contact as the AI will move Crunch away from Crash if approached, Crash can still take damage if the two do touch.

Regional Differences

Hmmm...
To do:
There's much more. There may be translations that are different, as well.

Graphical Differences

US Japan
Crash bandicoot 2 n tranced titlescreen.PNG Crash 2 Advance title screen J.png

The color of the gears was changed from silver to blue in the Japanese version.

US Japan
Crash 2 Advance Copyright USA.png Crash 2 Advance Copyright Japan.png

The copyright screen was also updated because Konami released the title in Japan. The screen also uses a more bold text.