Normal Cheats

Easy Capture: Move your direction pad in cicles in order to capturing Pokemon faster.
 

Gameshark Cheats

Enter a grass patch and capture the following Pokemon

01xxD8CF (turn the xx into  numbers and letters)
99 Bulbasaur 09 Ivysaur 9A Venusaur
B0 Charmander B2 Charmeleon B4 Charizard
B1 Squirtle B3 Wartortle 1C Blastoise
7B Caterpie 7C Metapod 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 Sandshrew 61 Sandslash
0F Nidoran(female) 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 Dugtrio
4D Meowth 90 Persian
2F Psyduck 80 Golduck
39 Mankey 75 Primeape
21 Growlithe 14 Arcanine
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 Graveler 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 Kangaskang
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 Omanste 63 Omastar
5A Kabuto 5B Kabutops AB Aerodactyl
84 Snorlax 4A Articuno
4B Zapdos 49 Moltres
58 Dratini 59 Dragonair 42 Dragonite
83 Mewtwo 15 Mew B6 Mising0.

No random battles: 01033cd1

Unlimited third item: 016323d3

Free Master balls at any Pokemart: 01017ccf