Final Fantasy III EDBC-5F0E Every time you equip something, you get another one of that thing and you don't lose an item when you use one!!!!! EE17-77D6 Learn magic from Espers faster.
3037-54A6 Learn all spells after battle.
DF62-E768 255 Vigor, Speed, Stamina, and 246 Magic Power.
BB62-E768 Very low Vigor, Speed, Stamina and Magic Power.
AADC-EF08 Always walk fast, no enemies.
AA94-E7D8+AA94-EF08+AA94-E4D8+D794-E708 Get Super items after battle.
AA2E-E4D8 Everyone gets 6 Paladine Shield's after battle (You lose what ever you are equiped to).
AA2A-54D8 Enemies don't give you experience.
AA24-E7D8 Each enemy always gives you a certain thing, for example, Exocite, Didalos, Bountyman and Latimeria Tintinabar or Exp. Egg Whelk, Tumble Weed, Wild Rat, and Statter Gauntlet or Genji Glove Rhobite, Innoc, and Trilobiter Gem Box or Dragon Horn
108C-EFD3+108C-E4A3 Buying an item gives you 9,999,999 gold.
The items look expensive, but you can keep buying them. AA24-54D8 Your invisible during battle.
AA23-E4D8+D724-E708 You don't get told what you get after battle.
AABC-576E Using an item increses supply by 24.
AA23-54D8 Level 99 experience, even in the velt.
AA23-5DD8 You don't get gold or experience after battle.
ED3B-E514 Tincture gives you 999 magic.
CC6B-E768 255 abilities, depending on what you are equipped to.
EEDB-EDA8 Start with 999 MP and 9999 HP.
3037-54D6 Learn the spells Mute, Regen, W-Wind, Quarter, Cure 3, Warp, Shell, Stop, and Break after battle.
AA68-E708 Know X-Magic and Capture.
AA28-EF08 Keep geting the gold after battle until you turn off the Game Genie
.AA20-77AD You can walk through most walls.
Earth Bound
DB23-77D1 Start with a level 9 character
DE23-77D1 Start with a level 15 character
7423-77D1 Start with a level 50 character
1723-77D1 Start with a level 100 character
EE23-77D1 Start with a level 255 character
EE2E-7D01 Start with a super strong character
BB2D-5461 Start with a lot of H.P.
BB2F-54A1 Start with a lot of PSI
LUFIA & THE FORTRESS OF DOOM
1) 4DB4-D401 Move around caves and world map quicker (except when leaving a vehicle--for example, the boat)
2) 8236-0F34 Infinite hit points
3) 823A-0FC4 Infinite magic points in battle mode
4) DDB8-6FD9 No HP lost when walking over swamp ground
5) D0B8-6FD9 More HP lost when walking over swamp ground
6) DF30-A718 Cheap bombs--1 gold each
7) DF3C-0D18 Cheap smokeballs--1 gold each
8) 6D8F-0DC4 Immune to all petrifying effects (stone, poison, confused, etc.)
9) 95A8-67A4 Shopkeepers don't charge for purchases--some shops only
10) FD34-0448 More agility points from speed potion
11) FD30-0438 More intelligence points from mind potion
12) FD31-07C8 More strength points from great potion
13) FD3D-0F18 Higher max level of magic points from spell potion
14) FD33-DDC8 Higher max level of hit points from power potion
15)47E2-0469
enemies will leave Dual Blades 70% of the time.