Super Mario Bros Action Replay Codes (World)
This page contains the Action Replay codes that I have available for Super Mario Bros (World), a game for the original NES (Nintendo Entertainment System). If you're playing on an emulator, you'll typically be able to put these codes into the program through a built in option. Anyone who is really old school and playing on a physical console will have to purchase a physical Action Replay device to use these codes.
If you don't see the code you want on this page, I recommend you return to my Super Mario Bros Guides Index and choose a different section.
Mario / Luigi Look Modification codes
SMB2 (J) Same Memory Address Codes
If You Keep Watching Mario.): AS YOU
Infinite Lives: 075A:03
Infinite Time: 07FA:09
Disable at the end of a level to advance past score tally
Always Running: 0783:0A
Climb Anywhere: 001D:03
You will always be climbing, if you move when turning the code on it won't disable scrolling.
Jump Through Blocks: 0754:02
Won't be able to get Power-ups since you jump through ? blocks
Super Jump: 0709:10
Walk Behind Scenery: 03C4:20
Walk In Water or Swim In Air: 0704:??
Alternate Level Modifier: 0760:??
01-23 are 1-1 - 8-4, increase further for crazy levels.
Always Underground BGM: 00f4:04
Always Castle BGM: 00f4:08
Always Overworld BGM: 00f4:01
Always Star BGM: 00f4:40
Coins, Question Mark Block flashing palette 1: 89C3:??:27
Coins, Question Mark Block flashing palette 2: 89C4:??:27
Coins, Question Mark Block flashing palette 3: 89C5:??:27
Coins, Question Mark Block flashing palette 4: 89C6:??:17
Coins, Question Mark Block flashing palette 5: 89C7:??:07
Coins, Question Mark Block flashing palette 6: 89C8:??:17
Scrolling Always Enabled: 0732:00
Use with Walk Through Walls or a jump code
Scrolling Always Enabled: 0723:00
Bonus rooms are connected
All Powerups Become ??: 0039:??
Boomerang Fireball: 03D2:00
Power-ups Give 1Ups: 0115:0B
Infinite Time: 0787:12
Clear Enemies: AASKPOZA
Flag Always Gives 5000 pts: 010F:00
More Enemis: AAKKLYPA
Sonic speed: B5F2:10
Suspended & Glide Through Mid-Air: 001D:00
Disable code when you want to return to the ground or when you reach a flag pole.
Danger Modifier: 06CB:??
Disable at the end of levels
(Danger Modifier) No Dangers: 06CB:00
(Danger Modifier) Koopas and Piranha Plants have no animation: 06CB:05
(Danger Modifier) Lakitu Attack: 06CB:12
(Danger Modifier) Always Flying Cheep Cheeps: 06CB:14
(Danger Modifier) Bowser Fire: 06CB:15
(Danger Modifier) Bullet Bills: 06CB:17
(Danger Modifier) Enemies transformed to Fire Sticks: 06CB:1F
Stage Type Modifier: 074E:0?
(Stage Type Modifier) Swimming (with swimming mechanics): 074E:00
(Stage Type Modifier) Above Ground: 074E:01
(Stage Type Modifier) Under Ground: 074E:02
(Stage Type Modifier) Castle: 074E:03
Mario Modifier: 0756:0?
(Mario Modifier) Little: 0756:00
(Mario Modifier) Big: 0756:01
(Mario Modifier) Fire: 0756:02
Fireball Trajectory Modifier
043A:??
043B:??
Ground Modifier
88 = Clouds, 86 = Water
There are many other combinations
06AC:??
06AD:??
Always Have Fireball
0754:00
0756:02
Fireball Trajectory Modifier - Fireball goes down like normal, then all the way up (like Super Mario Land for GB)
043A:00
043B:00
Fireball Trajectory Modifier - Fireball goes down at a sharp angle, then travels across the ground. Makes it difficult to hit enemies while jumping.
043A:FF
043B:FF
Every Enemy Killed Gives 1Up
0110:0B
0111:0B
0112:0B
0113:0B
0114:0B
Every Enemy Killed with Shell Gives 1Up
0125:08
0126:08
0127:08
0128:08
0129:08