-------------------------------------------------------------
Additional GameShark codes for Pokemon Yellow
by: James Donald ([email protected])
v1.4 5/16/2000
-------------------------------------------------------------

Contents
1. Introduction/FAQ
2. Pokemon hybrids
3. Pokegods
4. Special items
5. Nostalgia codes
6. Sprite codes
7. Miscellaneous codes
8. Finding more
9. Disclaimer


===========================================================
1) Introduction / Frequently Asked Questions about this FAQ
===========================================================

The common list of GameShark codes for Pokemon Yellow can be found at:
GameFaqs
 http://www.gamefaqs.com/portable/gameboy/game/23705.html
InterAct
 http://www.gameshark.com/game_titles/gameboy/pokemon_yellow/gameshark.shtml
Game Shark Codes Creators Club
 http://www.cmgsccc.com/gb/poky/
and some other places.

This document is a list of some decent GameShark codes for Pokemon Yellow that
aren't found in the common list.

If you're reading this I'll assume you're familiar with the common list. For
example, you should know easily how to get 99 master balls, form a team of six
Mewtwos, make a Bulbasaur with Fire Blast, etc.

The most recent version of this document can be found at:
http://www.ocf.berkeley.edu/~jdonald/pokeygs2.txt
The Pokemon Red/Blue version of this document can be found at:
http://www.ocf.berkeley.edu/~jdonald/pokegs2.txt

Q. I can't get pokegods to work. What do I do?
A. They're probably working fine, but you don't realize that the pokegods just
  look like ugly glitches. If you're getting ugly glitches, the codes are
  working as well as they can.
  If you actually are having trouble getting pokegods to work, then use the
  _2nd_ method outlined in the pokegods section. It doesn't fail.

Q. Can you teach me how to use the code generator?
A. Read the GameShark instruction manual. It has a good tutorial on how to
  find an infinite lives code with the GameShark. If you have lost your
  instruction manual, I scanned the important pages from the booklet and
  posted them on the web at: http://www.stanford.edu/~jdonald/gs.html

Q. Can you list the the rest of the pokegods?
A. I have listed all the pokegods on Red/Blue, and you can read my Pokemon
  Red/Blue version of this document for the 13 pokegods found in the red/blue
  versions. One reason that it may seem that I have left out some pokegods
  is that people come up with different names for them. Another reason could
  be that people have conflicting views about what a pokegod is. Some people
  say that a certain corrupted version of Dodrio is the pokegod called "Ash"
  because when you stat it you see a humanshape. That should not count as a
  pokegod, however, because its species number is only 85. Other people think
  that when you give a pokemon the skills hydro pump, fire spin, solarbeam,
  and psychic, it becomes the pokegod Charmewsquirasuar, but it's really
  nothing more than a pokemon with a few skills that it can't normally learn.

Q. So what does the mist stone do?
A. Please just read the description of my mist stone code.

Q. If I save the effect of one of these codes into my game, does the effect
  remain when I start a new game?
A. Many of these effects will remain when you load your game later on without
  the GameShark, but none of these effects would remain if you erased your
  saved game and started a new one.

Q. Can GameShark erase your saved game?
A. Well, yes it is possible. If you are worried about this, the cure-all is
  to use a Mega Memory Card. Even if you don't own one yourself, you can ask
  one of your friends who owns a memory card to back up a copy of your saved
  game on his card.

Q. What about other codes, such as modifying pokemon genes, changing your
  character's name, and modifying OTs?
A. I left out some stuff because it would take too long for me to explain.
  If I put in the codes for stat experience and pokemon genes, it would take
  a lot of words to explain everything and I'd get tons of email from people
  saying they don't understand the stat system at all. For things like
  modifying your character's name or your pokemon's OTs, I would have to
  explain the whole pokemon hex character set. If you'd like to see some of
  the codes I left out of this FAQ, you can probably find them on GolemKong's
  wonderful listing:
    http://pokeshark.cjb.net/

=======================
2) Pokemon hybrids
=======================

Each pokemon has a setting that I call the "extra species byte." For some
reason, each pokemon has _two_ bytes that identity its species. Normally, both
of these bytes should be set to the same value. But for some reason, if
they're different, the game functions just fine and will save both of those
values if you store the pokemon into Bill's PC or whatever. The "extra species
byte" defines the knockout-cry of your pokemon, what Ditto transforms into if
it sees your pokemon, and a few other minor things. On the yellow version only,
it even defines the color of your pokemon in battle. Also on the yellow
version, setting it to Pikachu (quantifier digits: 54) will cause your pokemon
to make all the cute Pikachu sounds.

Codes to set the "extra species byte":
01??6AD1  (1st pokemon)
01??96D1  (2nd pokemon)
01??C2D1  (3rd pokemon)
01??EED1  (4th pokemon)
01??1AD2  (5th pokemon)
01??46D2  (6th pokemon)
where ?? denotes the quantifier digits of a pokemon.

Here's another quirk. Surprisingly, your pokemons' types (grass, poison, etc.)
aren't exactly hardcoded into the game. They're stored in each pokemon's
data. If a pokemon has only one type, then both of these bytes are set to the
same value.

Codes to set pokemon types:
Type1     Type2
01??6FD1  01??70D1  (1st pokemon)
01??9BD1  01??9CD1  (2nd pokemon)
01??C7D1  01??C8D1  (3rd pokemon)
01??F3D1  01??F4D1  (4th pokemon)
01??1FD2  01??20D2  (5th pokemon)
01??4BD2  01??4CD2  (6th pokemon)
where ?? denotes the quantifier digits of pokemon types (listed below).

Normal     00
Fire       14
Water      15
Electric   17
Grass      16
Ice        19
Fighting   01
Poison     03
Ground     04
Flying     02
Psychic    18
Bug        07
Rock       05
Ghost      08
Dragon     1A

These changes won't appear when you stat your pokemon. For example, Bulbasaur's
types will still appear as grass and poison. However, You will be able to see
the effects when you pokemon battles. If you transfer such pokemon into Pokemon
Stadium, the effects are reversed. Stadium will show the modified types in a
pokemon's bio, but the modified types will not affect battle.

Example. To put in the 1st position a Charmander that makes a sound like
Bulbasaur when it faints, has type1 electric, and has type2 water:
01B063D1
01996AD1
01176FD1
011570D1


=======================
3) Pokegods
=======================

The accepted definition of a pokegod is a pokemon with a species number greater
than 150. Mew is one pokegod, and in fact he's the only real pokegod in Pokemon
red/blue/yellow.

However, there's a few lamers like me who fool with the GameShark and try the
104 quantifier digits that don't correspond to any real pokemon. These all make
garbage-glitch pokemon, but 13 of these garbage pokemon in red/blue have
species numbers greater than 150. So what these lamers then did was, for
example, they would see that pokemon #240 had a grass icon, so they'd make up
the story that pokemon #240 in red/blue was "Sapusaur", a pokegod which was the
evolved form of Venusaur. Some other such pokegods in red/blue include Pikablu,
Locustod, Rainer, Raticlaw, Sapusaur, Charcolt, and Millenum.

One lame thing about these pokegods is that there's a whole different set of
them in yellow from in red/blue.

Here's an example of a typical list of instructions to get a pokegod in the red
or blue versions. This is one of the few pokegods that have some quantifier
digits that are the same in the red/blue and yellow versions.

 How to get #205 Rainer:
   Code: 01C164D1 (on the yellow version this would be 01C163D1)
   Evolves from: Blastoise
   Then go to the name rater and rename in RAINER in all caps.
   Then Rainer is yours!

Most of the instructions to get pokegods are like this, which makes them pretty
misleading. First off, "evolves from" is a misnomer designed to make the
pokegods seem more meaningful. "Evolves from" really means "patch it from."
Furthermore, it doesn't even matter what pokemon you patch from. You could have
a Pikachu or a Charmander and you'd still end up with pokemon #205. Second,
these instructions imply naming it RAINER in all capitals is key to making an
authentic Rainer. In truth it doesn't matter what you name it, or whether you
name it all.

Here's two real and accurate methods of getting pokegods. The GameShark codes
given here are for the yellow version of Pokemon. I've also listed the pluses
and minuses of each method.

Method #1: Catch them
(If this method doesn't work, try method #2)
  1. Use the GameShark code 01??D7CF, where ?? denotes the
     quantifier digits of the pokegod you wish to catch.
  2. Run around in grassy areas or caves.
  3. When the pokegod pops up, throw a master ball at it.
  + You don't need to bother going to the name rater afterwards to fix the
    default garbage name, since you get to give it a nickname on the spot.
  + You get to see the pokegod's native skill set, although it's probably
    not very interesting.
  - Some of the quantifier digits of the pokegods are the same as digits
    for starting trainer battles, i.e. you may end up fighting Koga who
    then brings out the pokegod. To get around this, run around in grassy
    areas with the GS switch _off_, and flip it on only during the instant
    you see yourself being "sucked into" a random battle.
  - Make sure you are carrying six pokemon with you when you do this.
    Otherwise the pokegod you catch will probably immediately turn into
    Rhydon.
  - Some pokegods are more likely to crash the game with this method.

Method #2: Patch them from existing pokemon
(Use this if method #1 doesn't work)
  1. Use the GameShark code 01??63D1 (or one of the other five pokemon
     modifier codes), where ?? denotes the quantifier digits of the
     pokegod you wish to create.
  2. Turn on the GS switch when the existing pokemon you wish to use is
     in the first position (or another position if you used one of the
     other five codes).
  3. Go to the name rater in Lavender Town (optional).
  + This method is a bit faster than the other one, if you already have
    some dummy pokemon to spare.
  + This method rarely fails or crashes your game.
  - You don't get to name the pokegod on the spot.
  - You don't get to see the pokegod's skills set (although you probably
    probably don't care about that).
  - The pokegod's "extra species byte" (explained in the section on Pokemon
    hybrids) is still set to that of the original pokemon.

Stabilizing the pokegods:
Well, since all the pokegods except for Mew are just glitches, some have a
tendency to crash the game. To get rid of some of these crashing tendencies,
read my section about pokemon hybrids. Hybridizing your pokegod with an
existing real pokemon can make it less likely to crash the game. If they
still have crashing tendencies, then try hybridizing them with Pikachu
(quantifier digits: 54).  The special features of Pikachu in the yellow
version can give even more stability.

By the way, the pokegods, like Missingno, ruin your hall of fame when you
play with them, even if you don't save the game afterwards. So if you'd like
to keep your hall of fame listings and you don't have a memory card, then
don't play with pokegods.

There are 15 pokegods in the yellow version, not including Mew. For their
names, I'll use whatever the corresponding pokemon is called in Pokemon
Gold/Silver (Japanese version for now).

#159 - Arigeitsu
Quantifier digits: ED

#176 - Togechikku
Quantifier digits: 00

#195 - Nuo
Quantifier digits: EB, F3, F6, FB, or FC

#202 - Soonansu
Quantifier digits: E2 or DC

#203 - Kirinriki
Quantifier digits: E7 or C4

#205 - Foretosu
Quantifier digits: C1 or D8

#207 - Guraiga
Quantifier digits: E3 or DD

#215 - Nyuura
Quantifier digits: E6

#229 - Herugaa
Quantifier digits: CA

#230 - Kingudora
Quantifier digits: C2

#234 - Oddoshishi
Quantifier digits: E1

#245 - Suikun
Quantifier digits: DE

#250 - Houou
Quantifier digits: BF, DB, or E4

#254 - Beepin (for lack of any real name)
Quantifier digits: D9 or D6

#255 - Millenum (for lack of any real name)
Quantifier digits: E0

By the way, Missingno does not count as a pokegod, since its number is
less than 151. Aside from that fact, however, it isn't any different
from the pokegods mentioned here.

#000 - Missingno
Quantifier digits: 1F, 20, 32, 38, 39, 3D, 3E, 3F, 43, 44, 45, 4F, 50, 51,
                  56, 57, 5E, 5F, 73, 79, 7A, 7F, 86, 87, 8C, 92, 9F, A0,
                  A1, A2, AE, AF, B5, B6, B7, or B8

Once you've got some stable pokegods, you can put them in your team
of six or store them in Bill's PC, save your game, remove the Game
Shark, then go show off your pokegods to the kids at the playground.

And of course, pokegods are not playable in Pokemon Stadium.


=======================
4) Special items
=======================

To get items, you can use codes like the buy-any-item code (01??7BCF) or the
modify-first-item code (01??1DD3).

Surfboard             Quantifier digits: 07
Labelled as "?????", this item allows you to SURF without a surfing pokemon
or without the proper badge.

Pokedex               Quantifier digits: 09
Not too spectacular. It's an item that brings out the pokedex. If you noticed
that Ash is able to bring out his pokedex during battles on the TV show, well
now you can too. After using this item in battle, the graphics get a little
glitchy but the graphics clean up a bit when new pokemon are switched in.

Safari ball           Quantifier digits: 08
Infinite supply of safari balls to throw at pokemon outside the safari zone.

Throw rock            Quantifier digits: 16
Labelled as "CASCADEBADGE" this item allows you to throw rocks anytime.
When you use it, make sure that you are either not using the GameShark or
have the GS switch off. For some reason, if you throw a rock while the
device is on it will crash the game, even if you don't have any codes
entered.

Throw bait            Quantifier digits: 15
Labelled as "BOULDERBADGE" this item allows you to throw bait anytime.

Shift dimensions      Quantifier digits: A3, A4, or A5
Labelled as "RIVAL's", "NAME?", or "NICKNAME?", depending on which digits you
use, this item allows you to sneak through walls that are one space thick.
To get through a wall, first stand next to a wall, but face in a direction
where there's nothing in front of you, (i.e. off to the side). Then use the
item. When the game asks "Use item on which pokemon?", hit the B button a
few times to cancel. Your character will become invisible, but you can still
move him. Walk one space into the wall which you want to pass, then you won't
be able to move anymore. To fix the graphics, hit the start button and select
"POKeMON". When you are asked to choose a pokemon, hit the B button to cancel.
Now you will be visible again but one space into the wall, and you can walk
out of it in the direction you please.
What's the point of such a complicated and ugly procedure to walk through
walls when there's a much simpler walk-through-walls code featured later in
this code listing? Well, the point is that this item can be saved into your
inventory so you will be able to walk through walls later without having
the GameShark with you.

Note that the mist stone is not included in this list. I hope you can
understand why.


=======================
5) Nostalgia codes
=======================

After you've passed some point in the game, you might want to go
back to it.

To be able to fight Gym leaders again:

010054D7
0100A5D5
 - Brock

01005DD7
 - Misty

010072D7
 - Lt. Surge

01007BD7
 - Erika

0100B2D7
 - Sabrina

010091D7
 - Koga

010099D7
 - Blaine

010050D7
0100ABD5
 - Giovanni

To bring back some other nice people/things:

01001AD8
0100B5D5
 - Giovanni (Game Corner)

010137D8
0100BCD5
 - Giovanni (Silph Co.)

0100F5D7
 - Jessie & James (Mt. Moon)

01001AD8
 - Jessie & James (Game Corner)

010068D7
 - Jessie & James (Pokemon Tower)

010036D8
0100BCD5
 - Jessie & James (Silph Co.)

0100D7D7
0101A8D5
 - Snorlax (east of Vermillion City)

0100DFD7
0100A9D5
 - Snorlax (west of Celadon City)

010081D8
0100C2D5
 - Articuno

0100D3D7
0100AFD5
 - Zapdos

0100EDD7
0100B0D5
 - Moltres

01005ED8
0100BFD5
 - Mewtwo

010002D8
 - S. S. Anne

0100B0D7
0100ADD5
0100AED5
 - fighting dojo in Saffron City


=======================
6) Sprite codes
=======================

01021EC2
01022EC2
01023EC2
01024EC2
01025EC2
01026EC2
 - Many sprites look like Pikachu.

013C14C1
015016C1
 - Misty follows you around in the top half of the Cerulean Gym.
   Somewhat of an improvement on the original code.

013CF4C1                                              by Tyler Oxton
0140F6C1
 - Merge yourself with Pikachu.

01C304C1
 - Invisibility.

01AC02C1                                              by Charlie
 - Pikachu chasing pokeball.


=======================
7) Miscellaneous codes
=======================

01??40DA (hours)
01??42DA (minutes)
 - Playing time modifier.

010054D3
 - Maximum text speed.
   Save the game with this option on and text will always flow without delay
   even after the GameShark is removed.

01FF0AD7
01FF0BD7
 - FLY can reach every city.

01??6FD4
 - Pikachu's happiness modifier.

010138CD
 - Walk through walls.
   Unlike some other walk-through-walls codes, takes effect instantly.
   The game will crash when move your character to a space that doesn't exist.

0101FFD6
 - Move at bicycle speed anywhere.

0102E4C5
 - Jump higher in the Pikachu's Beach mini-game.

01201DD3
018CF6C3
0192F8C3
0193F9C3
 - Mist stone.
   There have been ridiculous rumors about a mist stone in the Pokemon red and
   blue versions. One of the supposed ways to get the mist stone in Pokemon
   red and blue is to put the codes 10939482, 01939482, and 01931ED1 into a
   GameShark and then use the itemfinder all over the Seafoam Islands. Know
   that those three GameShark codes are completely fake. I came up with my
   own set of four codes here for a mist stone in Pokemon Yellow. Basically,
   these put a fire stone at the top of your inventory and then change the F,
   R, and E into M, S, and T. Of course you don't get to keep the mist stone
   if you save your game then remove the GameShark, but this is the best I
   can do, considering all the rumors about the existence of a real mist stone
   are completely false.

010156D0
 - Steal other trainers' pokemon.
   This code is cool! To use it, first make sure the GS switch is in the "off"
   position when you start up the game. Then get into a pokemon match with
   another trainer and fight until you're up against the pokemon you wish to
   steal. When you're at the "FIGHT/ITEM/PKMN/RUN" menu, flip the GS switch
   into the "on" position, then flip it back into the "off" position. Now you
   can use your poke ball (great ball, ultra ball, master ball, or safari
   ball) to capture the pokemon! This code isn't perfect, because after you
   capture the pokemon, the trainer battle is over with you as the victor, but
   you'd probably prefer that the trainer battle continued so you could
   capture all of the enemy trainer's pokemon.
 - Also allows you to run from, use a poke doll in, whirlwind out of, or
   teleport out of a trainer battle, all resulting with you seemingly
   victorius.
   Unfortunately, this code temporarily stops random battles from occurring.

01E22DCD                                              by Cheater
01005DD7
 - Fight Professor Oak.
   To fight the professor, enter this code and talk to one of Misty's fellow
   trainers in the Cerulean Gym.
   Professor Oak's normal lineup consists of: Tauros level 66, Exeggcutor
   level 67, Arcanine level 68, Blastoise level 69, and Gyarados level 70.

0100A1D5                                              by Cheater
 - Clear the hall of fame.

0101A2D7                                              by Cheater
01??0FD7
 - Fossilized pokemon in Cinnabar Island laboratory modifier.

01??14D7                                              by Cheater
 - Rival's evolution choice for Eevee modifier.
   Use only quantifier digits 01, 02, or 03.

010091CF
 - Allows name rater to change nickname of first pokemon even if its OT or
   IdNo do not match yours.
   To use this code, go to the name rater with the GS switch off, and ask
   the name rater to rate another one of your pokemon whose OT and IdNo do
   match yours, then turn on the switch while entering your name and the
   name you enter will be the new nickname for your first pokemon.

010259D0                                              by [email protected]
 - Battle safari zone style everywhere.

010059D0                                              by [email protected]
 - Regular battle style everywhere. (Able to use master balls in safari zone.)

010066D3
 - Able to use FLY or TELEPORT from anywhere.
   Don't leave the switch on all the time when using this code. When you want
   to use this code, flip the switch on, flip the switch off, then use FLY or
   TELEPORT.

01002ED4
01??18D7
 - Makes TELEPORT, DIG, or escape ropes take you to the room of your choice.
   After entering a room by this method, however, you must not exit the room
   through it's normal exit. Instead you must use FLY to get out to avoid
   glitching the game.
   Don't leave the switch on all the time when using this code. When you want
   to use this code, flip the switch on, TELEPORT, then flip the switch off.
 - Some quantifier digits:
     76 = Hall of fame
     94 = Top floor of Pokemon Tower
     71 = Lance's room
     53 = Power plant
     E4 = Unknown Dungeon
     E3 = Deepest part of Unknown Dungeon
     33 = Viridian Forest
     C0 = Seafoam Cave

01FF95D0
 - Almost always win at the game corner in Celadon City.

01??3CD1 (1st item/pokemon modifier)                  by [email protected]
01??40D1 (1st price modifier)
01??3DD1 (2nd item/pokemon modifier)
01??42D1 (2nd price modifier)
01??3ED1 (3rd item/pokemon modifier)
01??44D1 (3rd price modifier)
 - Buy anything at any price at the game corner coin exchange.

010528CC
01013DCD
01023ECD
01053FCD
 - Able to use CUT, FLY, and STRENGTH without pokemon that have the skills.
   When the GS switch is on, the regular STAT/SWITCH/CANCEL menu that pops up
   when you select a pokemon will actually function as a menu for these three
   skills.

01??ECCF (1st skill)                                  by [email protected]
01??EDCF (2nd skill)
01??EECF (3rd skill)
01??EFCF (4th skill)
 - Enemy pokemon skill modifiers.

01275AC4
012C5CC4
011D5EC4
013784C4
 - Jump.

01025BD0
 - The music from gym leader battles is on when you fight any trainer.

010147DA
 - Clone pokemon.
   There are many ways to clone pokemon, with or without a GameShark. Of the
   known GameShark methods, I present here the one that seems to involve the
   least hassle.
 - Deposit the pokemon you wish to clone into the daycare center, then turn on
   the GS switch to enable this code and you can repeatedly pick up clones of
   the pokemon from the daycare.


=======================
8) Finding more
=======================

Most of the codes in this document were found using the GameShark Pro's code
generator. If you have the newer GameShark which has this cool feature, then
use it; it's a very powerful tool.

Anyway, if you find some more codes that I would be interested in, email me at
[email protected].


=======================
9) Disclaimer
=======================

Nintendo and Game Freak made Pokemon.
Interact made GameShark.
Special thanks to:
 - crackhole911, Fallen One, Anil Chandra, and The Pokegod Master. Each of
   their webpages shaped my knowledge of pokegods.
 - GSCCC. for the basic codes.
 - Cheater. for the Prof-Oak, old-man-pokemon-setting (only in red/blue),
   hall-of-fame, fossil-pokemon, and rival's-pokemon-modifier codes.
 - Tyler Oxton. for the merge-Ash-and-Pikachu sprite code.
 - Charlie. for the Pikachu-chasing-pokeball code.
 - IggyBoyAT and Eric DeBold. for critical feedback.
 - cfalcon, PoKamek, Meowth346, GolemKong, and other hackers active on
   sharkery forums.
 - [email protected]. for the safari-zone, coin-exchange-modifier, and
   enemy-skill-modifier codes, and for being an all-around very helpful and
   active pokemon hacker.

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