Wonder Boy in Monster World gen (USA, Europe)

Always have all weapons, armor, and boots. by Tony Hedstrom

HWBA-BEH2 +
98BA-AAH4

Can use any magic, even if you don't have it/Note by Tony Hedstrom

AK6A-AA9Y

Coins you get from killing enemies are worth a lot more (at least 45). by Tony Hedstrom

HX2T-BB12

High jump and better traction./Note by Tony Hedstrom

E4DT-AAWE

Hits Take No Energy/Note by Unknown

95TA-B768

Increase Speed Of Boots And Other Items by Unknown

96FA-BTH6

Infinite All Magic by Fanat

 BCDT-AA54

Infinite Elixir by Fanat

 AJWA-AA9W

Infinite Gold by Fanat

VENA-A0NC

Infinite Hearts by Fanat

 AMTA-AA7E

Infinite Medicine, Holly Water, Potion, Ocarina by Fanat

 AJWT-AA2G

Invincibility by Fanat

 R1TA-A6X4
 R1TA-A6T2
 R1TT-A6TT

Invincible by hybrid

R1TA-A6WR

Invincible by Fanat

FF9F0B:10

Jump in mid-air (multi-jumps). by Tony Hedstrom

RHZT-A6ZY

Makes the Gradius or Knight swords much stronger (can kill enemies with 1 hit). by Tony Hedstrom

94GA-B73A

Never die from enemy attacks by Tony Hedstrom

RHTA-A6Z4

One hit kills any enemy or boss./Note by Tony Hedstrom

RFET-A61C

Start a new game with 8 hearts, and 12 Quake magic. by Tony Hedstrom

BWHA-ATCL

Start a new game with 8 hearts. by Tony Hedstrom

ACHA-ATCL

Super high jump and better traction/Note by Tony Hedstrom

C4DT-AAWE

The guy that gives you 3 Fire Storm's at the beginning of the game will give you 12 instead by Tony Hedstrom

ARFA-A2BY

Walk a little faster/Note by Tony Hedstrom

JCDT-BTCJ

Walk a little faster, and your jumps will have slow moon descent/Note by Tony Hedstrom

BWDT-BTCJ

Walk much faster/Note by Tony Hedstrom

JCDT-AALJ

Walk much faster, and your jumps will have slow moon descent/Note by Tony Hedstrom

BWDT-AALJ

Walk through walls, rocks, etc. by Tony Hedstrom

BA2A-AA4G