The following are known Action Replay Codes for Mega Man Battle Network 3: Blue Version on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.
These codes are for the U.S. version of the game.
Master Code – Must Be On
27b0cce2
aaaf9985
160dee65
2c1f5955
Infinite HP
67d877dd
4d37c5f6
Max HP
f4f1efc2
c536f678
Infinite Zenny
cf9e65a2
643185eb
Easy Enemies
9008afe1
f8117e44
85748a84
fc2e27dd
fbba951a
8939b0f5
Full Custom Bar
ba7a342f
91de9f39
Full Chip Select
e84c9e88
bac57933
Full Movement
a9afcd65
c82c08ea
004c9023
1c47bf77
Have All Sub Chips
abdcafa9
e6673bdc
44e437c4
3d2bc882
No Random Battles
a0b2ee68
8a25021e
Have All Key Items
1d7bbca3
2123ad4f
c89a41ad
5b7cada0
Max Bug Frag
b4732afa
b145c5b4
Chips Do 9,999 Damage
5d97aa53
0f59216a
b6084f13
01e26fa7
Max Attack
1c09ffda
f98184a9
Max Speed
ba9cd517
1df26ba0
Max Charge
e0d43b47
972fd330
RegChip 99MB
4d07d7c4
8b90287c
These codes were also known as GameShark Codes and in most cases will work on both devices.
These codes are for the U.S. version of the game.
Master Code – Must Be On
27b0cce2
aaaf9985
160dee65
2c1f5955
Infinite HP
67d877dd
4d37c5f6
Max HP
f4f1efc2
c536f678
Infinite Zenny
cf9e65a2
643185eb
Easy Enemies
9008afe1
f8117e44
85748a84
fc2e27dd
fbba951a
8939b0f5
Full Custom Bar
ba7a342f
91de9f39
Full Chip Select
e84c9e88
bac57933
Full Movement
a9afcd65
c82c08ea
004c9023
1c47bf77
Have All Sub Chips
abdcafa9
e6673bdc
44e437c4
3d2bc882
No Random Battles
a0b2ee68
8a25021e
Have All Key Items
1d7bbca3
2123ad4f
c89a41ad
5b7cada0
Max Bug Frag
b4732afa
b145c5b4
Chips Do 9,999 Damage
5d97aa53
0f59216a
b6084f13
01e26fa7
Max Attack
1c09ffda
f98184a9
Max Speed
ba9cd517
1df26ba0
Max Charge
e0d43b47
972fd330
RegChip 99MB
4d07d7c4
8b90287c