Proto:Super Mario World 2: Yoshi's Island/ys romX 0

This is a sub-page of Proto:Super Mario World 2: Yoshi's Island.

To do: Move info over from (and simplify) the ys_rom_0_D pages. The bulk of the info should be kept on this page and its sub-pages. There's still oh so much left to cover: Differences in the title screen diorama, many sprite changes of varying differentiation, palette differences, full map comparisons for surviving areas (like 1-6 and the cave section of What's Gusty Taste Like), etc.

The ys_romX_0 prototype of Yoshi's Island may look a lot like the final game, but there are many differences in presentation, gameplay, and level design.

Notably, the title screen bears the prefix "Super Mario Bros. 5" instead of "Super Mario". The international release of the final game would carry this idea on by attaching the prefix Super Mario World 2 (the original Super Mario World was subtitled Super Mario Bros. 4 in Japan).

The header needs to be patched to make the ROM bootable: At offset 0x7FD5, replace FF FF 0B FF FF with 20 15 0B 00 00.

Gameplay Differences

There's a lot of them.

• The timer works almost like the one from the final game, but instead of using Stars it uses tiny clock-shaped objects and if Yoshi loses some of them they cannot be re-collected. The timer also counts down slower, with one in-game second actually being a second long (this would be restored in Super Mario Advance 3). It also doesn't automatically refill when it goes below 10 and Baby Mario is on Yoshi.
• Yoshi can't make eggs by swallowing enemies. He needs to stomp on them to make an egg that needs to be collected, though not every enemy Yoshi jumps on will turn into eggs (Goombas, Mildes, Georgette Jellies, etc.).
• Yoshi is able to eat the sand that can be found in the levels, something not possible in the final version. He will also automatically use his tongue to eat any sand nearby.
• Yoshi's movement is stiffer, taking longer to build up momentum than in the final. He also moves a little slower.
• After doing a flutter jump, Yoshi must touch the ground before being able to do another one. If the jump button is pressed again after a flutter jump, Yoshi just lifts his feet up.
• Yoshi cannot perform a flutter if he falls off a ledge without jumping first.
• If Baby Mario is separated from Yoshi, he falls on the ground and starts crawling instead of crying and floating in a bubble. He doesn't cry even if he is stolen by an enemy. Baby Mario's ground sprites remain in the final ROM, unused.
  • If Baby Mario falls off a ledge, the flying Snifits will slowly come up carrying him, allowing Yoshi to jump over and get him back if he gets the chance to.
  • Occasionally, if Baby Mario is separated from Yoshi, a Bandit will appear from the side of the screen and try to kidnap him.
• Eggs can be reused after they've interacted with enemies and many objects, such as the ? Clouds.
• Spitting enemies while holding Up shoots them straight upwards. In the final version, they are shot in an arc.
• This and the later builds support saving progress to SRAM, but when starting a game from File 1 all the levels are automatically unlocked, a score of 40 is assigned to them (overwrites the already existing scores), the life and coin counters are set to 99, and the Dragon Coin counter is set to 50.
• Before World 2-8, if the player has previously completed World 2-7 in File 2, a mini-cutscene of the appearance of fog will be played (despite its presence before it).
  • By the way, if you leave the level without passing it, the game will assign it 0 points, but the level will be counted as won. In the same way, it becomes clear that the ending of the game has not yet been implemented.
• The tiles that compose the level select screen can be moved by placing the cursor on one of them, pressing X or Y, then moving the tile to the desired position (must be empty) and pressing X or Y again. This is not saved to SRAM, but it may glitch the level select screen.
• A number of debug tools that are left unused in the final game (freeze frame, instant level clear on File 2 that also works on Files 1 and 3, and a free movement mode) are active by default in this build.
• When 100 coins are collected, the coin counter resets to 0 and a Dragon Coin is awarded instead of a life.
• Poochy will not give Yoshi a ride if Yoshi hops on him.
• This build has a different score tally board from the final.
  • The final score is calculated by adding the remaining Time Points (up to 30), Flower Points (up to 40), and Beat Points (up to 30). A fourth stat, Miss Points (up to -30), is subtracted from the total, but doesn't have a clear purpose and the only known way to get it is taking damage from watermelon seeds (will always set it to -1). While this scoring system is different from the final one, the maximum score that can be obtained is the same (100). The red color in the palette is also a bit brighter.

Protos	Final

Below is an example of the Miss Points in use. In this example, Yoshi took damage from watermelon seeds and the Time Points were restored using items:

• In this build, the pause menu removes Yoshi and every object in the current level, writes SELECT (or PAUSE if no item is available in the slots) on-screen using rotating characters, and shows the current amount of Dragon Coins and items on the bottom. The final version uses a black background and shows PAUSE on the top, the current score and the current record for the level in the middle, then on the bottom the current amount of lives, coins, Stars, and the available items. Apart from the whole item selector flashing faster compared to the final version, its left and right sides flash in a different way from the rest. In the final version, it flashes uniformly.

At least one item

Proto	Final

No items

Proto	Final

• When aiming an egg to be shot, there are a few differences:
  • The cursor will automatically lock on to enemies.
  • The egg can be powered up if the egg-tossing button is held for a couple of seconds. When the egg is powered up, it will be shot like in the final release. Otherwise, the egg will just be tossed towards whatever direction the cursor was in.
  • In the final release, if the player moves Yoshi in the opposite direction than Yoshi is facing, Yoshi will walk backwards. In this prototype, Yoshi turns around while still aiming the egg.
• When Yoshi is being transformed, a short animation of a sprite waving a wand with an incorrect palette can be seen. This sprite is the blue-capped baby that was replaced by Baby Mario later in development.

A similar animation exists for Baby Mario too, and can be seen in-game by using Game Genie code EED8-AD67 (EED8-A467 for the later prototype):

After it finishes, Baby Mario stays still like in the image above, but resets every time he lands again on Yoshi's back.

• The world maps have a unique appearance in this build, with more color, detail, and animation, however they share the same base, recoloring it in each world (moreover, enemy infestation is only reflected in world map 1).
• The player's color of Yoshi can only be changed when a level is completed via Goal Ring, instead of being adjacent to a world's level (a purple Yoshi is able to be played outside a 5th level, for example).
• Yoshi can defeat a Piranha Plant by eating it when its head is small.

Audio Differences

• This build uses placeholder sound effects and music from Super Mario World.
• Upon unlocking World 2-8 on a save file, the Valley of Bowser unlock sting will play and the map music will be temporarily swapped with that of Vanilla Dome. The music will continue to play until entering a level, where the regular map music will resume as normal.

Graphical Differences

Tilesets

Global

Proto	Final

An incredibly minor change. The pastel shading on the signpost is less pronounced.

Proto	Final

The proto goes for a more metallic look with its hard blocks, as opposed to the final's more stone textured ones.

Cave

Proto	Final

Much like in Super Mario World, the common wooden post object would become bones in underground areas. This applies to both the flat and spiked variants of the object. The final game instead uses graphics which look much closer to its appearance in other tilesets.

Proto	Final

The multi-colored crystals have different shading. While more detailed than the final, they appear less translucent.

Proto	Final

The decorative spores were originally mushrooms.

Additionally, the foreground sparkling effect is not used in any cave levels.

Snow

Proto	Final

The slope tiles in this tileset had some very clear collision lines that were cleared up in the final.

Jungle

Proto	Final
	File:YI Final JunglePalCompare.png

The palette used was overhauled for the final game. The grass was made a more lush green color in the final.

Proto	Final

The shading on the canopy was made notably less plain in the final game.

Proto	Final

The moss on the stone pillars was made more defined in the final.

Marble Castle

Proto	Final
	File:YI Final MarbleCastlePal1Compare.png

While the final game has many different palettes for this tileset, the palette used in the prototype most closely resembles the one used in 1-8 in the final. Even then, the early palette is a much more uniform brown color when compared to the final.

Proto	Final

The top of wall ledges are much more rugged and rocky looking. It seems this was the basis for the appearance of the wall ledges in the final's Stone Castle tileset.

Proto	Final

The bottom right corner of the circular window, not used in the final, was slightly touched up.

Proto	Final

Horizontal bricks have much heavier shading than the final.

Proto	Final

More cracked than it is in the final game. Interestingly enough, the strange "dark pillar" found in the final game is also here, left untouched in the final.

Proto	Final

The unused shadowed brick was also touched up, as the left side of it was cut off.

Proto	Final

More minor changes to the shading on the pipes used in fortresses.

Flower Garden

Proto	Final

The shading on this tileset, primarily used in the first world, was given a facelift.

Cloud/Cliffside

Proto	Final
	File:YI Final RockyCliffs.png

The rocky cliffs were reshaded in the final.

Stone Castle

While not used for any rooms in this build, an early version of the Stone Castle tileset can be found by changing the Layer 1 tileset. This tileset would later be used in the ys_rom_0_D prototype.

Backgrounds

Backgrounds are of varying level of completion, and only about half of the final backgrounds are present here.

Layer 2

Use the Pro Action Replay (PAR) code 7E017AXX to change the Layer 2 background, and 7E017CXX to change the palette.

384px

Background ID: 00
Palette ID: 00
An alternate version of the castle hall background which lacks the sky at the top. Not to be confused with background 19, which is the final castle hall background.

Proto	Final
384px	384px

Background ID: 01
Palette ID: 01
Completely different background, featuring very rough pastel hills. The final replaced this with another woods background.

Proto	Final
	File:YI-FinalBGPal03.png

Background ID: 04
Palette ID: 03
The background itself is identical to the final, but the palette was altered to have pinkish grass at the bottom, rather than green.

Proto	Final
384px

Background ID: 05
(Palette ID unknown)
A strange background featuring soapy, bubbly clouds. Replaced with a completely different background in the final game, though it wound up unused.

Proto	Final
384px

Background ID: 08
Palette ID: 08
A completely different, much scratchier forest background. The final one was remade completely from scratch.

Proto	Final
	384px

Background ID: 0A
Palette ID: 0A
Another completely different background. This one uses similar tropical hills as seen in the final, but partially submerged in water. The water is animated in both versions.

Proto	Final
384px

Background ID: 0F
Palette ID: 0F
A radically different background. The earlier version definitely lines up more with the Layer 3 background with the same ID.

Proto	Final
	384px

Background ID: 13
Palette ID: 13
Another revamp. The crystals have a sparkling animation, which wound up unused in the final game.

Proto	Final
	384px

Background ID: 14
Palette ID: 14
The background in the proto is actually identical to an unused Layer 3 background, which is also present in this build as well. The final replaced this with the wooden cobwebs background.

Layer 3

There are comparatively fewer differences in the Layer 3 backgrounds. Use the Pro Action Replay (PAR) code 7E017EXX to change the Layer 3 background, and 7E0180XX to change the palette.

Proto	Final
384px	384px

Background ID: 1B
Palette ID: 13

Significantly less detailed, and the animated butterflies are missing.

Proto	Final

Background ID: 18
Palette ID: 11

Layout is nearly the same as final, but walls bricks and clouds are less detailed, only one tower is present, little stars are missing, and palette received a complete overhaul.

Sprites

Proto	Final

The Message Blocks have a circular shape in this build, rather than the standard blocky shape.

Proto	Final

The collectible Stars that boost the player's countdown timer are clocks in this build.

Proto	Final

Proto	Final

Kamek's Toadies are propeller-wearing Snifits in this build. Their propellers (during gameplay) don't animate in this build, but the graphics are present in the ROM. Interestingly, the propellers of Green Solo Toadies, or rather, Green Solo Snifits in this build, are properly animated.

Proto	Final

Yoshi went from just glancing upward to actually making an effort at looking up.

Proto	ys_rom_0_D/Final

The spiky chain ball had less spikes, and appeared the same upside-down as it would right-side-up.

Proto	ys_rom_0_D/Final

The Yoshi block that Yoshi touches when transformed was originally more blunt with what its purpose is.

Proto	Final

The watermelons that Yoshi can eat look more like pears at this point.

Proto	Final

The doors had a pink hue to them, and the barred door had a rather unsightly magenta line down the middle.

Proto	Final

This weight used to be this... thing, before it was altered to be a more sensical spiky log of wood. The spike chain was also redrawn to be thicker.

Proto	Final

The Middle Ring was a light shade of blue.

Proto	Final

The Goal Ring saw some minor tweaks. The Bonus Challenge roulette is signified by the flower turning blue, rather than becoming larger. Additionally, the rest of the ring is made up of red Super Stars, rather than the blue orbs seen in the final. With all five Bonus Flowers, the roulette is identical to the final. However, the positions of the flowers is different if Yoshi has fewer than five Bonus Flowers:

Four	Three	Two	One
4 Bonus Flowers	3 Bonus Flowers	2 Bonus Flowers	1 Bonus Flower

The final did away with this, having the flowers remain in the same positions regardless of how many are collected.

Proto	Final
File:YI-ProtoBonusChallenge.png	File:YI-FinalBonusChallenge.png

The "BONUS CHALLENGE" graphic doesn't have a Flower in it. In the final version, the "BONUS" text was also shrunk down a bit to make space for the Flower.

Proto	Final

The stem of the Piranha Plant was blue, and comparably stood a bit taller than in the final.

Proto	Final

The missile that the Relay Heihō drops was colored green. In the final game, the only green missiles are the ones that the Grinders drop.

Proto	Final

Yoshi's Train transformation originally didn't have an orange nose. Notably, the final sprite's nose is a pixel bigger in the big sprite.

Proto	Final
	62px

While there aren't any stages in this build that use the Submarine transformation, it is fully functional with the Pro Action Replay code 7000B20C. Is entirely orange, rather than green.

To do: Isn’t this supposed to have the sprite comparison?

Proto	Final
	42px

Crazee Dayzees have a smaller mouth.

Proto (in-game)	Proto (correct palette)	Final
64px

Every level which contains ski lifts in the prototype uses an incorrect enemy palette, resulting in the ski lifts appearing incorrectly. The outlines on the ski lifts are more faded. Likely changed to make it more clear that Yoshi can interact with them, rather than being background decoration.

Proto	Final

The Melon Bug's sprites in this build are nearly identical to its appearance in the unreleased Super Donkey, save for a few minor shading differences. This design was seemingly the basis for the enemy's official artwork.

Proto	Final

The lettering on the POW Blocks are more uniform, more in line with how it appeared in previous games.

Proto	Final

Spear Guys wield their weapons with the opposite hand they do in the final. Interestingly, due to this, they have a unique sprite of raising their shield if Yoshi tries to tongue them from the front. The color of their shoes and plumage were also changed slightly.

Proto	Final
Ball 'n Chain Operators
Relay Heihō
Relay
Drop Missile
Stunned
Tekkyu Dosun

Various obstacles found in fortress stages, which are operated by Boo Guys in the final are instead operated by living Shy Guys here.

Proto	Final

Beach Koopas wear plain white undershirts, as they did previously in Super Mario World.

Proto	Final

Arrow signs were much more crude. Interestingly, they're drawn as Super FX sprites here, while they are not in the final.

Proto	Final

• Baby Mario's nose is smaller, possibly this was changed in the final version to more closely resemble Mario's nose.
• Baby Mario's diaper has extra shading of a few orange pixels that was removed in the final version.
• Baby Mario's falling are very different, especially on the head where it seems to be more animated than the final version, in addition to showing Baby Mario's hair.
• Baby Mario's looking up is slightly different from the final version.
• Some Baby Mario sprites there is shading in addition to the eyes with a darker palette that was removed from the final version.
• Some leftover sprites of the blue-capped baby as seen in Yoshi's transformation animation! although due to the switch to Baby Mario he now has the wrong palette.

Yoshi Colors

Almost every different Yoshi color was revised for the final release, with the exception of the Green Yoshi. Interestingly, White and Black Yoshies were planned to make their debut here, before Yoshi's Story!

Proto	Final

Sprite Colors

As seen with the door and Wild Piranha, many sprites, while graphically unchanged, use different palettes than in the final.

• The randomization of enemy palettes which is present in the final is not present here. This means that it is much more common to see multiple enemies of the same color.
• While all eggs behave identically in the prototype, the eggs that can be obtained from Egg Blocks can be of many colors which are not used in the final.
• Keys are less golden in color.
• Salvo the Slime lacks their distinct green color, looking no different from a regular Slime in the final game. Interestingly, this lines up with the official art for Salvo.
• Flatbed Ferries are cyan and orange in color, as opposed to green and pink in the final.
• Likely due to a bug, sometimes one of a pair of Burts will use the wrong palette.
• Flamer Guys are blue, rather than red.

Intro Differences

Proto	Final

During the part where Yoshi meets Baby Mario for the first time, a beam of sunlight shining in the forest was removed in the final.

More notably, instead of the map dropping down on Yoshi's head, a wand does. This is a leftover from earlier in development, where the baby that Yoshi encountered was a blue-capped wizard/magician.

Proto	Final

When Yoshi is walking back to the other Yoshies, it can clearly be seen that Baby Mario's diaper is blue instead of white like it is in the final. It is likely that it was like this to reflect the color of Mario's overalls in other Mario games, but in the end it was changed to white.

Script

Proto	Translation	Final (JP)	Final (EN) (Official Translation)
これはまだ マリオが、うまれるまえのおはなしです。	This is a story of the time before Mario was born.	むかし、むかしのおはなしです。 あかちゃんマリオとヨッシーのはなしです	A long, long time ago... This is a story about baby Mario and Yoshi.
コウノトリが、みらいのヒーローになる ベビィーマリオを、はこんでいました。 そのときです、なにかがむかってきます。	A stork is carrying Baby Mario, our future hero. But just then, something started heading his way.	よあけまえのくらいそらを　コウノトリが おおあわてで　すっとんでゆきます。 そのくちばしに　ふたごのあかちゃんを　 しっかりとくわえて　いそぐ　いそぐ！　 そのとき、くものあいまからもうスピード で　つっこんでくる　ひとつのかげが！	A stork hurries across the dusky, pre-dawn sky. In his bill, he supports a pair of twins. Suddenly, a shadow appears in a gap between the clouds and races towards the stork with blinding speed.
キィーッ！ウキー！ そこのあかちゃん いただくぜー！ マリオを さらいに むかってきます！	"SCRREEEECH!!!" "THAT BABY IS MINE!" It's coming to kidnap Mario!	キィーッ！ウキー！ そのあかちゃん　いただくぜー！	"SCRREEEECH!!!" "THE BABIES ARE MINE!"
うわあぁぁっ！	WOW!!!	うわあぁぁっ！ そいつは、すれちがいざま　あかちゃんを ひったくって　ゆきました。	WOW!!! Snatching only one baby, the creature vanishes into the darkness from whence it came.
あっ・・・ あまりのスピードに てもとがくるい マリオを おとしてしまったのです。	But it moved so fast that it lost control and dropped Mario... OH NO...	あっ・・・ なんということでしょう。あかちゃんの ひとりが、おっこちて　しまいました。	The second baby falls undetected towards the open sea... OH NO...
いっぽう ここはヨッシーズアイランド ヨッシーが いっぱいすんでる しまです いっぴきのヨッシーが さんぽしてます。 なにかが おこりそうな かんじです。 あ、やっぱり・・ とほほ・・ すっかりせなかになじんでしまっている このあかんぼうといい、 いみありげに おちてきた、この“ちず”	Meanwhile, here is Yoshi's Island, home to all Yoshies. Yoshi is talking a walk. He has a feeling something might happen. Oh! I knew it! Poor thing... Both the baby who has quickly adapted himself to Yoshi's back, and this "map", which fell down in a very meaningful way.	いっぽう　ここはヨッシーアイランド。 ヨッシーが　いっぱいすんでる　しまです いっぴきのヨッシーが、おさんぽちゅう。 けさは、とっても　よいてんきです。 　んっ・・・？ なんと　そらから　さっきのあかちゃんが ヨッシーの　せなかに　おちてきました。 どうやら　あかちゃんは、ぶじなようす。 よかった　よかった。 おやっ？ほかにもなにやら　あかちゃんと いっしょに　おちてきたものが。	Meanwhile, here is Yoshi's Island, home to all Yoshies. It's a lovely day, and Yoshi is taking a walk. HUH?!? Suddenly, a baby drops in onto his back. The baby seems to be fine. This is very fortunate! Wha-? Something else fell with the baby... Let's take a peek...
やっぱりこのあかちゃん ちずをたよりに とどけてやるべき だよな．．．． しまの みんなで ちからをあわせれば なんとかなるだろう。んっ、そうしよう！	"We should probably rely on the baby's map to deliver him... If everyone on the island works together, we should manage. Yep! Let's do it!"	どうやら　これは”ちず”のようです。 コウノトリが、つかっていたものかも？ だけどヨッシー　ちんぷんかんぷん。 なかまと　そうだんすることにしました。	It looks like a map. Maybe the stork was using it? But Yoshi can't figure it out. Yoshi decides to talk to his friends.
ウキッ、ウキキー！ まほうつかいのカメックは、マリオを ゆうかい できなかったのが くやしくて ムーチョたちに、おおいそぎで マリオを つかまえるように めいれいしました。	AAAAAAAAAAKK!!! Kamek the magician, frustrated that he was unable to kidnap Mario, orders the Snifits to hurry up and capture him.	ウキッ、ウキキー！ あかちゃんを　さらったのは、カメックと いうクッパじょうにすむ　まほうつかい。 あかちゃんを　ひとり　おとしてきたのに きがついて　こぶんにさがしにゆかせます	AAAAAAAAAAKK!!! Kamek, the evil Magikoopa, and kidnapper of the baby, quickly dispatches his toadies, when he discovers that he missed the other baby!
とにかく しまのみんなで このこを、 はこんでやることにした ヨッシーたち。 いったいぜんたい どんなたびに なることやら．．．． つづく・・	Anyway, all of the Yoshies on the island decided to carry the baby home. What the heck kind of adventure will they have...? To be continued...	なかまのところへむかう　ヨッシーですが どうにかなるさ　と　きらくなようす。 しかし、カメックたちは　しまじゅうで あかちゃんの　ゆくえをおっています。 はたして　ふたりの　あかちゃんは　ぶじ パパとママに　とどけられるのでしょうか	Yoshi heads leisurely back to the other Yoshies, unaware of the danger at hand. Kamek's forces are actively searching the island. Will these two children ever reach their parents safely?

The opening narration is generally similar to the final, but is worded completely differently.

Other Differences

Stage Select

While there are many sprites featured on the first world map, this one winds up unused. It appears to be the same Rocky Wrench buggy that was found in the assets for the 2020 Gigaleak.

Error Messages

Apart from having a slightly different font, error messages that the game may display have minor differences from the final version: Controller Error

Proto	Final

Unlike the final game, the check is performed every time before loading the world map rather than before the Nintendo logo. This means that it's necessary to have a standard controller plugged into Port 1 and something other than a controller plugged into Port 2 to trigger it. In this prototype the music stops, but in ys_rom_0_D the map screen music plays at this screen. Strangely, the text was shifted a bit to the right in the final version. Region Error

Proto	Final

The font was tweaked, "DESIGINED" was corrected to "DESIGNED", "OR SUPER NES" was split into two lines, and a period was added.

Transformations

Bomb

An unused transformation where Yoshi becomes a bomb and explodes, which destroys all enemies on-screen. The graphics for this transformation still exist in the final game, where they go unused. To activate this transformation, use Pro Action Replay (PAR) code 7000B20E.

Controls

There are three types of controls that can be chosen in the level selection screen.

Type 1

* Y: Extend tongue / Put enemy in mouth / Spit enemy out (no eggs) - Aim (hold) / Throw egg (release; Aim and Throw only if Yoshi carries at least one egg). * A: Extend tongue / Put enemy in mouth / Spit enemy out (even if Yoshi carries at least one egg). * B: Jump. * L: Lock target reticule when aiming. * R: Change target reticule when aiming.

Type 2

The style closest to the final game's. * Y: Extend tongue / Put enemy in mouth / Spit enemy out (even if Yoshi carries at least one egg). * A: Aim (hold) / Throw egg (release, Yoshi throws even with no eggs). * B: Jump. * L: Lock target reticule when aiming. * R: Change target reticule when aiming.

Type 3

* Y: Aim (hold) / Throw egg (release, Yoshi throws even with no eggs). * A: Extend tongue / Put enemy in mouth / Spit enemy out (even if Yoshi carries at least one egg). * B: Jump. * L: Lock target reticule when aiming. * R: Change target reticule when aiming.

Levels

World 1 The world of gooey blobs.

World 2 This world's plant has quite a bite!

World 3 That's a lot of turtles...

World 4 Poochy strikes back!

World 5 You've heard of lunar rabbits, now get ready for lunar ravens!

World 6 Look, it's from Baby Bowser!

Related Things

Bonus Challenges You'll need 5 Dragon Coins to view this sub-page.

Items A very different set of tools for Yoshi to utilize.

Mini Battles We all know why Yoshi had to quit his job as a house demolisher.

Preview Icons Because snowmen don't sit when riding cable cars.

Level Names

All of the levels in Yoshi's Island have a name that briefly appears at the start of the level.

To do: Add the introductive level text.

...But does it make sense? The translations on this page need to be proofread. If you are fluent enough in this language, please make any corrections necessary! Notes: Spiritix will do initial translating, but needs to be double-checked for correctness.

World 1

Level	Proto	Translation	Final (JP)	Final (EN) (Official Translation)
1-1	ワンワンちゅうい　コース	Chain Chomp Warning Course	タマゴをつくって　なげろ	Make Eggs, Throw Eggs
1-2	パックンのもり　コース	Piranha Plant Forest Course	きょだいワンワンちゅうい	Watch Out Below!
1-3	たけうまジャンプ　コース	Stilts Jumping Course	プチパックンのどうくつ	The Cave of Chomp Rock
1-4	ムーチョのとりで　コース	Snifit’s Fort Course	ビッグドンブリの　とりで	Burt the Bashful's Fort
1-5	とりアスレチック　コース	Bird Athletics Course	ちくわゆか　アスレチック	Hop! Hop! Donut Lifts
1-6	トンネルめいろ　コース	Tunnel Maze Course	たけうまにのったヘイホー	Shy-Guys On Stilts
1-7	つむじとジュゲム　コース	Gusty and Lakitu Course	さわるとふるふるワタボー	Touch Fuzzy Get Dizzy
1-8	スライムボスのしろコース	Slime Boss's Castle Course	ビッグスライムの　おしろ	Salvo The Slime's Castle

World 1-1 Duplicates

There are 19 level slots that lead to duplicates of World 1-1. Slots 0x44 and higher lead to glitch levels and may crash the game. Of these 19 duplicates, 16 (0x09, 0x14-0x23, and 0x2D-0x3B) have the "Yoshi's Island - Hollow Grasslands" title card also found in the final game. You can access one of these levels with Game Genie code DBDD-B356 in both prototypes. These title cards use a slightly different font compared to the final version:

Proto	Final

The other three (0x0A, 0x0B, and 0x2C, which can be accessed with Game Genie codes DCDD-B356, D8DD-B356, and 4ADD-B356 respectively) feature different and unique title cards:

• 

  Boss Boss Boss
  Is It Really A Boss?
• 

  Weak point is the belly
• 

  Bubble Boo

(Translation: chess!!#5822 (first and last one))

World 2

Level	Proto	Translation	Final (JP)	Final (EN) (Official Translation)
2-1	はなちゃんとポチコース	Flutter and Poochie Course	ノコノコとパタパタがいた	Visit Koopa And Para-Koopa
2-2	やきゅうコース	Baseball Course	ミットさんとバットくん	The Baseball Boys
2-3	テトリスブロックコース	Tetris Block Course	つむじくんって　どんなあじ	What's Gusty Taste Like?
2-4	ヘリコでGO!	Go Helicopter!	びっくりテレサの　とりで	Bigger Boo's Fort
2-5	つむじとおたまとキラー	Gusties, Cloud Drops, and Bullet Bills	ジュゲムに　きをつけろ	Watch Out For Lakitu
2-6	ぐるぐるどうくつコース	Circulating Cave Course	なぞときめいろ　どうくつ	The Cave Of The Mystery Maze
2-7	ゆらゆらワタボーコース	Swaying Fuzzies Course	かべあなから　ジュゲム	Lakitu's Wall
2-8	ドカンめいろコース	Pipe Maze Course	おせおせ！　つぼおばけ	The Potted Ghost's Castle

World 3

Level	Proto	Translation	Final (JP)	Final (EN) (Official Translation)
3-1	ノコノコ　コース	Koopa Course	ようこそモンキーワールド	Welcome To Monkey World!
3-2	かべあなジュゲム　コース	Lakitu Wall Course	ようきなヤリヤリダンサー	Jungle Rhythm...
3-3	カウントゆかアスレチック	Counting Platform Athletics	ウンババのすむジャングル	Nep-Enuts' Domain
3-4	きょだいワンワン　コース	Giant Chain Chomp Course	ゲロゲーロのすむ とりで	Prince Froggy's Fort
3-5	パタパタごろごろ　コース	Scattered Para-Koopa Course	ジャングルのアスレチック	Jammin' Through The Trees
3-6	プクプク　コース	Cheep Cheep Course	ハリネズミの どうくつ	The Cave Of Harry Hedgehog
3-7	ジュゲム　コース	Lakitu Course	おさるのすきな みずうみ	Monkeys' Favorite Lake
3-8	てっきゅうドスン　コース	Pounding Iron Ball Course	ビッグパックンの どかん	Naval Piranha's Castle

World 4

The names of these levels seem to be placeholders that are supposed to briefly describe the level, though they don't really.

Level	Proto	Translation	Final (JP)	Final (EN) (Official Translation)
4-1	カベバタン	Wall Smash	マリオでGO！GO！	GO! GO! MARIO!!
4-2	たつまき	Tornado	かべあなジュゲムの ちか	The Cave Of The Lakitus
4-3	クルクルゆか	Spinning Platform	カウントゆかアスレチック	Don't Look Back!
4-4	ゴロゴロ	Rumble	ビッグプチプチの とりで	Marching Milde's Fort
4-5	パウスイッチ	One Pause	もってけ ワンワンいわ	Chomp Rock Zone
4-6	カニワンワン	Chain Chomp Crab	プクプクがいる みずべ	Lake Shore Paradise
4-7	プクプクアビスカニ	Cheep Cheep Abyss Crab	せんリフトでアスレチック	Ride Like The Wind
4-8	キラーキシャワンワン	Bullet Bills Shooting Chain Comps	ビッグノコノコの おしろ	Hookbill The Koopa's Castle

World 5

World 5-7 does not have a name come up at the beginning of the level in this build.

Level	Proto	Translation	Final (JP)	Final (EN) (Official Translation)
5-1	とりやまとざんコース	Bird Mountain Climbing Course	ゆきの　 かみなりジュゲム	BLIZZARD!!!
5-2	アホーどりらっかコース	Goonie Descent Course	スキーリフトで GO！	Ride The Ski Lifts
5-3	せんリフトアスレチック	Lift Line Athletics	つるつる 　こおりのせかい	Danger - Icy Conditions Ahead
5-4	カウントゆかとしろコース	Counting Platform and Castle Course	ビッグけめくじの とりで	Sluggy The Unshaven's Fort
5-5	おそらのくもコース	Clouds of the Sky Course	あほーどりでアスレチック	Goonie Rides!
5-6	ジュゲンとリフトコース	Lakitu and Lift Course	おそらの くものうえで	Welcome to Cloud World
5-7			せんリフトと おちるゆか	Shifting Platforms Ahead
5-8	とりようさいコース	Bird Fort Course	ビッグキューちゃんのしろ	Raphael The Raven's Castle

World 6

Level	Proto	Translation	Final (JP)	Final (EN) (Official Translation)
6-1	ちかめいろコース	Underground Maze Course	きょうふの ほねあほーどり	Scary Skeleton Goonies!
6-2	おばけとほのおのコース	Ghost and Fire's Course	ボロドーだらけの どうくつ	The Cave Of The Bandits
6-3	おばけとホネコース	Ghost and Bone Course	かいてんまるたアスレチック	Beware The Spinning Logs
6-4	ようがんとどかんコース	Lava and Banging Course	ビッグカチカチの とりで	Tap-Tap The Red Nose's Fort
6-5	ようがんとどうくつコース	Lava and Cave Course	すご～くなが～い どうくつ	The Very Loooooong Cave
6-6	てっきゅうドスン　コース	Pounding Iron Ball Course	こわいこわい ちかのめいろ	The Deep Underground Maze
6-7	つむじとテトリスブロック	Gusties and Tetris Blocks	すごくハードなアスレチック	KEEP MOVING!!!!
6-8	てっきゅうドスン　コース	Pounding Iron Ball Course	いよいよ クッパじょうだ	King Bowser's Castle