The Codes!
•How to catch Missingno
First you need to trade with someone in the pokemon lab have a pokemon with surf and surf up and down the coast of cinnabar islands. Eventually you might fight a pokemon called missingno.. it’s not very good but it has two water gun attacks and a sky attackand it does lots of damage. It’s pretty easy to kill. it looks like a tower of dots flying around. if you catch it it’s graphic will be displayed as many things usually a person and pokemon picture flashing. Just throw balls at it to catch it. Don't worry if you've heard that is messes up your graphics because once you save and restart it'll be fine.
•Where the Moon Stones Are (not really a code but it’s cool!)
There are five Moon Stones, three of which are visible, two of which are not.
1) In the upper-lefthand corner of the first floor of Mt. Moon.
2) In the basement of the game corner.
3) In the bottom-right corner of Route 2 (Use CUT).
4) In Mt. Moon, before the supernerd's platform, there is a corridor 4 spaces long and 1 space wide, go to the end of it and press A and poof! you have a Moon Stone.
5) In the Pokemon Mansion on Cinnabar Island, go up to the right side of one of the pillars on the right-hand side near the entrance hit A and it will say you found a Moon Stone.
•How To Catch Safari Pokemon outside of the safari Zone:
To fight and capture Safari Zone Pokemon outside of the park, first go into the park. Let the time run out when you're standing in a patch of grass which holds the Pokemon you want to catch. Step back outside and use FLY to Fly back to Cinnabar Island. Using SURF, surf up and down the right side of the shoreline, where you are half on shore and half in the water. You should then enter some battles with Safari Zone Pokemon! No more bait or rocks! It's sleep and Psybeam time! This also works with other areas of the game where you find a spefic type pokemon. i.e. Pokemon Tower, Viridian Forest, or Unknown Dungeon.
•Get Lot's of one item:
First make sure that the item you want to duplicate is in the sixth position on your item list. Then fly to Viridian city, the one where you first see a pokemart and pokemon centre, and talk to the guy who taught you to catch pokemon say you're not in a hurry and he'll catch a weedle. Once he is done talking fly to Cinabbar Island, the on with the pokemon lab that resurrected your fossils, and swim up and down the east coast so you are half on land, half on water. You may encounter some extremely high level Charmeleons and Squirtles, you may catch them if you like. Soon you will run into a missingo who's name is composed of symbols and an "M" Defeat it and you will get over 100 of the 6th itemin your list. this is very useful, use it on rare candies,master balls, and expensive things like nuggets!
•Gameshark Codes: Catch Every Pokemon, and Get Every Item
01nnD8CF (turn the nn into the numbers and letters)
99 Bulbasaur
09 Ivysaur
9A Venusaur
B0 Charmander
B2 Charmeleon
B4 Charizard
B1 Squirtle
B3 Wartortle
1C Blastoise
7B Caterpie
7C Metapodi
7D Butterfree
70 Weedle
71 Kakuna
72 Beedrill
24 Pidgey
96 Pidgeotto
97 Pidgeot
A5 Rattata
A6 Raticate
05 Spearow
23 Frearow
6C Ekans
2D Arbok
54 Pikachu
55 Raichu
60 Sandshrewk
61 Sandslash
0F Nidoran(femalle)
A8 Nindorina
10 NidoQueen
03 Nidoran(male)
A7 Nindorino
07 NidoKing
04 Clefairy
8E Clefable
52 Vulpix
53 Ninetales
64 Jigglypuff
65 Wigglytuff
6B Zubat
82 Golbat
B9 Oddish
BA Gloom
BB Vileplume
6D Paras
2E Parasect
41 Venonat
77 Venomoth
3B Diglett
76 Dugtrios
4D Meowth
90 Persian
2F Psyduck
80 Goldduck
39 Mankey*
75 Primeape
21 Growlithe
14 Arcaninel
47 Poliwag
6E Poliwhirl
6F Poliwrath
94 Abra
26 Kadabra
95 Alakazam
6A Machop
29 Machoke
7E MachAmp
BC Bellsprout
BD Weepinbell
BE Victreebell
18 Tentacool
9B Tentacruel
A9 Geodude
27 Gravelern
31 Golem
A3 Ponyta
A4 Rapidash
25 Slowpoke
08 Slobro
AD Magnemite
36 Magneton
40 Farfetch'd
46 Doduo
74 dodrio
3A Seel
78 Dewgong
0D Grimer
88 Muk
17 Shellder
8B Cloyster
19 Gastly
93 Haunter
0E Gengar
22 Onix
30 Drowzee
81 Hypno
4E Krabby
8A Kingler
06 Voltorb
8D Electrode
0C Exeggcute
0A Exeggutor
11 Cubone
91 Marowak
2B Hitmonlee
2C Hitmonchan 0B Lickitung
37 Koffing
8F Weezing
12 Rhyhorn
01 Rhydon
28 Chansey
1E Tangela 02 Kangaskhan
5C HorSea
5D SeaDra
9D Goldeen
9E Seaking
1B Staryu
98 Starmie
2A Mr. Mime
1A Scyther
48 Jynx
35 Electabuzz
33 Magmar
1D Pinsir
3C Tauros
85 Magikarp
16 Gyarados
13 Lapras
4C Ditto
66 Eevee
69 Vaporeon
68 Jolteon
67 Flareon
AA Porygon
62 Omanvste
63 Omastar
5A kabuto
5B Kabutops
AB Aerodactyl
84 Snorlax
4A Articuro
4B Zapdos
49 Moltres
58 Dratini
59 Dragonair
42 Dragonite
83 Mewtwo
B6 Missingno.