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Proto:World of Illusion Starring Mickey Mouse and Donald Duck

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This page details one or more prototype versions of World of Illusion Starring Mickey Mouse and Donald Duck.


The origins of this World of Illusion prototype are a bit mysterious. It's one of those 16-bit prototypes that's been around for so long that it's not clear who dumped the cart, or when it was originally dumped. It seem to be a build of the game from the around the time of the 1992 Summer Consumer Electronics Show, though with the number of debug features present it doesn't seem to be that exact build.

The date in the ROM header is September 1992, compared to October 1992 in the final game. This is almost definitely a projected game completion date rather than the actual build date, which would be some point around June 1992.

Round Differences

Differences that aren't square.

WOILivingPlantP.png
Round 1
Enchanted Forest
WOIRound2Icon.png
Round 2
Among the Clouds
WOILeapingFishP.png
Round 3
Underwater Adventure
WOIChocolateBridgeP.png
Round 4
The Library
WOIRound5Icon.png
Round 5
The Magic Box

Intro / Prologue

  • The first difference can be heard as soon as the game starts. For the SEGA logo and Illusion Shot Pictures screens, the prototype plays a version of the Walt Disney Pictures "Blue castle" theme heard in many of Disney's 80s and 90s releases. The final version plays no music at all.
  • The prototype fades out after the song ends, which takes about 15 seconds. In the final game, the fade out only takes 9 seconds.
Prototype
WOIIntroFGProto.png
Final
WOIIntroFGFinal.png
  • In the intro's foreground layer, there are many more duplicated tiles in the final version. Note that the cane holding up the top hat and the rim around the barrel are only complete in the prototype version of the game. Those tiles were likely removed to make room for new graphics needed for the final version.
Prototype
WOIIntroBG1Proto.png
Final
WOIIntroBG1Final.png
  • Again the prototype version has more detail than the final version. In this case, most of the graphics that were deleted are at the bottom of the screen, which is obscured by the foreground layer anyway, as are the dresser and box at the far left.
Prototype
WOIIntroBG2Proto.png
Final
WOIIntroBG2Final.png
  • The drawer that was deleted from the previous background layer is appropriately redrawn to match the new perspective in the prototype, though obviously this wasn't needed in the final version. The magic box is completely visible in the prototype; It was moved behind a pile of boxes (Which was also simplified) in the final game. The brick wall also extends out further in the prototype.
Prototype Final
WOIGoofyIntroP.gif WOIGoofyIntroF.gif
  • Even poor Goofy has his graphics trimmed for the final game. He went from a three frame animation of worryingly looking at his watch, to a two frame animation of carrying props across the stage.
Prototype Final
WOITitleP.png WOITitle.png
  • The time taken from the initial dissolve to the title screen background to the "Press Start Button" graphic appearing is about five seconds shorter in the prototype version, causing the intro music to go out of sync.
  • Both Mickey and Donald look pretty wonky on the prototype's title screen. Donald's hand was redrawn and highlights were added to his eyes, while the Mickey sprite looks completely new.
  • The copyright information was expanded to include the year and a second SEGA copyright.
  • There are no gameplay demos in the prototype.
Prototype
WOIStoryP.png
Final
WOIStoryF.png
  • All of the pictures in the prologue are in sepia tones in the prototype! All sprites are larger in the final version, while the backgrounds were mostly left alone.
  • Donald has a shadow in the second and third prototype pictures. For some reason, this detail was removed in the final game.
  • The robed figure looks considerably less sinister in the prototype.

Main Menu

Prototype Final
WOIMenuP.png WOIMenuF.png
  • The Password and Player cards were swapped in the final version.
  • The starting round & stage numbers and current sound test ID are displayed below the stage.
  • The black below the stage was changed to a very dark grey color to properly blend with the font palette.
WOIStageSelect.png
  • Passwords haven't actually been implemented yet - the password screen acts as a stage select instead. The first card controls the Round number, and the second and third cards control the stage number. The fourth card doesn't do anything yet.
  • The game won't remember the current player setup if you go back to the player select menu again. So, if you chose Donald and went back into the menu, the cursor would default to Mickey and you'd have to select Donald again.
  • The sound test also plays sound effects in the prototype. In the final version, it only plays music and voice clips.
  • Exiting the sound test will not reset the sound test counter as it does in the final version.

Ending

Prototype Final
WOIEndingP.png WOIEndingF.png

The final version added the rising curtain, Pete (lower-right), and about 15 generic seat fillers to the magic show. The prototype always uses what would become Mickey's ending in the prototype; The final version adds two more endings for clearing the game as Donald and in 2P mode.

Gameplay Differences

Prototype Final
WOIControlsP.png WOIControlsF.png
  • The default player is Donald in the prototype and Mickey in the final game.
  • An important change in controls:
  • In the prototype, players swing their capes with the Attack button, run by holding the Attack button, and perform round-specific magic tricks with the Magic button.
  • In the final game, players swing their capes with the Attack button, run by holding the Run button, and perform round-specific magic tricks by pressing any of the three action buttons.
WOIDebugP.png

  • Several debugging features are enabled by default:
  • Mickey and Donald are invincible, though insta-death hazards like pits and the running water in Round 2-D will still cause the player to lose a try.
  • Pressing the Start Button toggles a simple free-movement mode.
  • Holding the A Button and pressing Start sends the player back to the main menu.
  • All of the cards, health pick-ups, and other items that are abundant in the final version are completely absent in the prototype version. In fact, they haven't even been drawn or coded yet!
  • Players can't swing their capes while ducking in the prototype version.
  • Players start with 10 tries in 2P mode in the prototype. This was reduced to 6 tries in the final game.
  • Players can't stun each other with their capes in 2P mode yet.
  • Hoisting a player up in 2P mode is twice as slow in the prototype game.
  • The game will frequently freeze if one of the players dies in 2P mode. This seems to be a bug with trying to find a respawn point for the revived player.
  • The Game Over screen will always display the password for Round 1, regardless of the players' progress.

Graphical Differences

Both Mickey and Donald's sprites were polished in the final version. The following changes keep the characters closer to their official models, and applies to almost every single frame of animation:

  • Both character's torsos are thicker.
  • Mickey's ears now maintain a consistent shape between animations.
  • Mickey's ears stay closer to the center of his head.
  • The buttons on Mickey's overalls look shinier.
  • Donald now has his signature red bow tie.
  • The white trim around Donald's neckline is now yellow, and yellow trim has been added to his shirt cuffs.
  • Donald's feet are fatter and use less complicated shading.

Interestingly, the final version's cutscenes still use the prototype player sprites! It seems that SEGA made the choice to redo the storybook pictures in full color before the character designs were updated.

Prototype Final Game Comments
WOIMickeyIdleP.gif WOIDonaldIdleP.gif WOIMickeyIdleF.gif WOIDonaldIdleF.gif In the prototype, the first frame of Mickey's idle animation has his head turned backwards, which can kinda mess with the player's perspective. This was fixed in the final version, and the idle animation was redone so that he looks back twice before getting into a more relaxed pose.
WOIMickeyWalkP.gif WOIDonaldWalkP.gif WOIMickeyWalkF.gif WOIDonaldWalkF.gif Mickey is again glancing back in the prototype, looking much more nervous than he should. He's glancing upwards in the final game.
WOIMickeyCapeP.gif
WOIMickeyCapeF.gif
The magic capes are monochromatic in the prototype version, though the actual shape of the capes are identical between versions.
WOIDonaldCapeP.gif
WOIDonaldCapeF.gif
The cape swinging animation was shortened from 50 frames in the prototype to 38 frames in the final version, leaving players less vulnerable to enemy attacks and speeding up play time.
WOIMickeyJumpP.gif WOIDonaldJumpP.gif WOIMickeyJumpF.gif WOIDonaldJumpF.gif When Mickey and Donald land after jumping in the prototype version, they very briefly go into their falling animations. This was fixed in the final game.
WOIMickeyDuckingP.gif WOIDonaldDuckingP.gif WOIMickeyDuckingF.gif WOIDonaldDuckingF.gif Mickey's ears go all over the place while looking around in the prototype version, while they stay closer to the center of his head in the final game. The shivering effect around Donald no longer extends below his belly in the final version.
WOIMickeyHitP.gif WOIDonaldHitP.gif WOIMickeyHitF.gif WOIDonaldHitF.gif Mickey and Donald can't actually take damage in the prototype, but the animations are already in the game.
WOIMickeyHitExtraP.png
WOIMickeyHitExtraF.png
These two hit frames aren't used in the prototype or final game, but they were touched up regardless.
WOIDonaldFallingP.png
WOIDonaldFallingF.png
Donald no longer has an overbite in his pitfall animation in the final version.
WOIMickeyDazedP.png
WOIMickeyDazedF.png
In Mickey's dazed animation, Mickey's hands are in a different, more hilarious position in the prototype.
WOICarpetRideP.gif
WOICarpetRideF.gif
Mickey and Donald's palettes are incorrect in the prototype version. This only affects Mickey's cloth color, but Donald has an additional coloring error with his yellow bill.
WOIMickeyWaiting.pngWOIDonaldWaiting.png N/A These animations, used when one player has lost a try and has to wait for the other player to come along, are only in the prototype version. The final game just reuses the dazed animations.

Unused Graphics

These graphics are unused even in the prototype. They're nowhere to be found in the final game, having been deleted to make room for new graphics.

Graphics Comments
WOIMickeyHolding.png WOIDonaldHolding.png Stationary balancing sprites for Mickey and Donald. They're always moving in the prototype and final game.
WOIDonaldFallWaiting.gif A strange animation of a despondent Donald trying to fly, similar to his removed waiting sprite.
WOILotus.png
A water lotus that's loaded during Round 2-D. This was presumably replaced by the pile of pink leaves seen in the final game.
WOILotusParts.png
The water lotus would split into these parts when hit by Donald.
WOIRound3DUnusedClouds.png
An extra layer of parallax scrolling for Round 3-D. There's not enough vertical space on the screen for this layer, though.
WOICar.gif WOICarSmoke.png Graphics for a "CAR" enemy that matches the style of the Round 4-D enemies seen in the final game.
WOIBombFlag.gif WOIBombFlagSpark.gif Another Round 4-D type object. It's a "BOMB" flag that explodes, as bomb flags are wont to do.
WOIPushDicePressed.png
Special pressed variants of the dice seen in Round 5-1. In the final game, these graphics were deleted, and they just sink into the gorund.
WOIComingSoonFix.png A "COMING SOON" banner. This was presumably used in the actual Summer CES build, but it's unused in this version.
This is not the correct palette for this object; The palette seen here is based on the font seen in the Game Over screen.

Audio Differences

Music

Track Proto Final Comments
Intro
Very obvious placeholder instruments are used in the prototype version, but otherwise the song is the same.
Round 1-1
The prototype track is about 10% slower than the final track. The final game adds another 17 seconds worth of music to the end of the track.
Round 1-2
The final track is very slightly faster, fixes the instrument choice of the prototype, and, again, is 17 seconds longer.
Round 2-1
In addition to more appropriate instruments, an 8 second intro and 8 second outro were added to the final track.
Round 2-M
Though the main melody is the same, the individual sound channels are very different between versions.
Round 2-D
The prototype track is 5% slower than the final track. That's all, really.
Round 3-D
The prototype uses a version of the Round 3-2 song with seemingly inverted volume levels to temporarily fill this slot.
Round 3-2
Yet more strange instrument choices in the prototype version.
Round 4-1
Same melody, same tempo, different instruments. Yes.
Round 4-M
This track is mostly the same but for the backing instruments at the end changing.
Round 4-P
Instrument changes again, and the prototype track has a less spectacular ending. The final game's track is two seconds longer.
Round 5-1
A few instruments were altered to be less ear-piercing.
Round 5-M
Volume adjusted on two channels at the end of the track.
Round 5-P
Instrument changes. Note that this track is also used for Round 5-2 in the prototype, which has its own track in the final game.
Boss
Instrument changes. Boss instrument changes.
Round Clear
Last of the instrument changes.
Game Over
The percussion section is barely audible in the prototype version.

Sounds

Though these sounds aren't actually used in the prototype, they can be heard in the sound test. They differ so much from the final sounds that they probably weren't even intended for the same purpose.

Track Proto Final
A2
A3
A7
A9
AD
AE

Voices

Tony Anselmo thankfully re-recorded these low-quality Donald samples.

Voice Proto Final
Donald: "Alakazam!"
Donald: "Wow!"

Text Differences

Cutscenes

All cutscene text is in the game, though the Box Magic and Card Magic text can't normally be seen in the prototype. The text is in a pretty unpolished state at this point, though it's not as poorly written as the unused draft seen in the prototype and final ROMs.

Context Proto Final
Intro
 “Uh, I don't know if that's such   
  a good idea...” returned Mickey,  
  noticing a strange glow behind    
  the curtain.

     Mickey stepped inside to       
     inspect the box and Poof!,     
     he disappeared too.
 “Uh, I don't know if that's such   
  a good idea...” replied Mickey,   
  noticing a strange glow behind    
  the curtain.

     Mickey stepped inside to       
     inspect the box and...Poof!,   
     he disappeared too.
Carpet Magic
  Inside the chest, there is an     
ancient manuscript. It describes the
great magic.

  “. . . If you say magic word,     
’ALAKAZAM’and press A button, a     
flying carpet will appear.


It is easy to control: hold down C  
Button to fly up. If you don't press
C button, your carpet will come back
to the ground.  ”
  Inside the chest, there is an     
ancient manuscript describing great 
magic.

  “If you say the magic word,       
’ALAKAZAM’, and then press any one  
of the buttons, a flying carpet     
will appear.

To control the carpet, hold down    
the JUMP button to fly up. If JUMP  
is not pressed, the carpet will     
descend.

Use the direction pad to control    
your movement.”
Bubble Magic
  “. . . If you say magic word,     
’ALAKAZAM’and press A button, a     
magic bubble will appear.


It is easy to control: hold down C  
Button to float up when you are in  
water, and use D button to control  
your direction.

If you don't press C button, you and
your bubble will sink down.”
  Inside the chest, there is an     
ancient manuscript describing great 
magic.

  “If you say the magic word,       
’ALAKAZAM’, and then press any one  
of the buttons, a magic bubble      
will appear.

To control the bubble, hold down    
the JUMP button to float up, and use
the direction pad to control your   
movement.

If JUMP is not pressed, the bubble  
will sink.”
Box Magic
  “. . . Say ’ALAKAZAM’and press A  
button, then you can warp another   
box.”
  Inside the chest, there is an     
ancient manuscript describing great 
magic.

  “If you say ’ALAKAZAM’, and then  
press any one of the buttons, you'll
be transported to another box.”
Card Magic
  “. . . If you say magic word,     
’ALAKAZAM’and press A button, you   
can command cards.”
  Inside the chest, there is an     
ancient manuscript describing great 
magic.

  “If you say ’ALAKAZAM’, and then  
press any one of the buttons, you'll
be able to command cards.”

In-Level Dialogue

Even though none of the in-level dialogue triggers are present in the prototype, most of the text is in the ROM. All of the text differs significantly from the final draft.

Context Proto Final
Carpet Magic
“ IT LOOKS LIKE NOW
 IS THE TIME TO TRY
 THAT NEW MAGIC.”
“ THIS LOOKS LIKE A
 GOOD TIME TO TRY OUT
 THAT NEW MAGIC.”
Bubble Magic (1P)
“I'LL NEVER KNOW IF
 I DON'T GIVE IT A
 TRY. DO IT!”


“HERE GOES NOTHING!”

Bubble Magic (2P)
MICKEY:“DO YOU REALLY
        THINK THIS MAGIC
        TRICK WILL
        WORK?”

DONALD:“WE'LL NEVER KNOW
        IF WE DON'T GIVE
        IT A TRY.
        LET'S DO IT!”
MICKEY:“GOSH, I REALLY
        HOPE THIS NEW
        TRICK WORKS...” 


DONALD:“WE'LL NEVER KNOW
        'TIL WE TRY!”
Door Magic (1P) N/A
“I THINK MY NEW TRICK 
 WILL COME IN HANDY
 NOW.”
Door Magic (2P)
“THIS LOOKS LIKE A GOOD
 TIME TO USE THAT NEW
 MAGIC TRICK.”
“I THINK OUR NEW TRICK
 WILL COME IN HANDY
 NOW.”
Card Magic (1P) N/A
“THIS MUST BE WHERE
 I CAN USE MY NEW
 MAGIC!”
Card Magic (2P)
“THIS LOOKS LIKE THE
 TIME TO TRY OUT THAT
 NEW MAGIC.”
“THIS MUST BE WHERE
 WE CAN USE OUR NEW
 MAGIC!”
Final Boss Intro
“YOU HAVE DONE WELL TO HAVE
 MADE IT SO FAR, BUT YOUR
 FATE ENDS HERE - YOU CAN
 NEVER ESCAPE!”
“YOU HAVE DONE WELL SO FAR,
 BUT YOUR ADVENTURE ENDS
 HERE! YOU'LL NEVER DEFEAT
 ME!”
Final Boss Beaten (1P) N/A
“AMAZING! NO ONE HAS EVER
 DEFEATED ME! YOU ARE A GREAT
 MAGICIAN! AS I PROMISED,

 I'LL SHOW YOU MY GREATEST   
 TRICK: HOW TO ESCAPE FROM
 MY WORLD OF ILLUSION.”
Final Boss Beaten (2P)
“I DON'T WANT TO DO THIS,
 BUT I WILL TEACH YOU THE
 WORLD'S GREATEST MAGIC
 TRICK.”
“AMAZING! NO ONE HAS EVER
 DEFEATED ME! YOU ARE GREAT
 MAGICIANS! AS I PROMISED,

 I'LL SHOW YOU MY GREATEST 
 TRICK: HOW TO ESCAPE FROM
 MY WORLD OF ILLUSION.”

Other Unused Text

Address Text Notes
0x1D78B
CONFIGLATION
ROUND NO
RESTART NO
Text for a much more primitive configuration menu.
0x1E31B
NOW PROGRAMING
Generic placeholder message that's not needed anywhere in this build.