Blue Switch (SMA4:SMB3)

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The Blue Switch is an e-Reader card for use with Super Mario Advance 4: Super Mario Bros. 3. It was only available in Japan.

Once scanned, all 1-Up Mushrooms in the game become 3-Up Moons. This feature allows Mario and Luigi to accumulate extra lives much more easily.

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Super Mario Bros. 3

Protagonists	Mario \| Luigi \| Princess Toadstool \| Toad \| Mushroom King
Bosses	Larry Koopa \| Morton Koopa Jr. \| Wendy O. Koopa \| Iggy Koopa \| Roy Koopa \| Lemmy Koopa \| Ludwig Von Koopa \| Bowser
Items	Super Mushroom \| Fire Flower \| Super Leaf \| Star \| 1-Up Mushroom \| Frog Suit \| Hammer Suit \| Coin \| Tanooki Suit \| P-Wing \| Goomba's Shoe \| Music Box \| Boomerang *(Super Mario Advance 4* only) \| Cape Feather (Super Mario Advance 4 only)**
*Switches (SMA4* only)**	Yellow Switch \| Green Switch \| Red Switch \| Blue Switch \| Blue Green Switch \| Cyan Switch \| Orange Switch
Worlds	Grass Land \| Desert Land \| Water Land \| Giant Land \| Sky Land \| Ice Land \| Pipe Land \| Dark Land \| Warp Zone \| World-e *(Super Mario Advance 4* only)**
Enemies	Angry Sun \| Baby Blooper \| Baby Cheep \| Big Bertha \| Blooper Nanny \| Blooper \| Bob-omb \| Boo \| Boomerang Bro. \| Boss Bass \| Bullet Bill \| Buster Beetle \| Buzzy Beetle \| Cannonball \| Chain Chomp \| Cheep Cheep \| Dry Bones \| Fire Bro. \| Fire Chomp \| Fire Snake \| Goomba \| Hammer Bro. \| Hot Foot \| Jelectro \| Koopa Paratroopa \| Koopa Troopa \| Lakitu \| Lava Lotus \| Micro-Goomba \| Missile Bill \| Muncher \| Nipper Plant \| Para-Beetle \| Paragoomba \| Pile Driver Micro-Goomba \| Piranha Plant \| Podoboo \| Ptooie \| Rocky Wrench \| Roto-Disc \| Sledge Bro. \| Spike \| Spiny Cheep-Cheep \| Spiny \| Stretch \| Thwomp \| Venus Fire Trap

Switches
! Switch \| ? Switch \| Blue Green Switch \| Blue Switch \| Blue Switch (SMA4:SMB3) \| Cyan Switch \| Fire Lamp \| Flipswitch \| Grape Switch \| Green Switch \| Hat Switch \| Kong Switch \| Lever Switch \| Orange Switch \| Pineapple Switch \| P-Switch \| Red Switch \| Skull Switch \| Star Switch \| Target Switch \| Yellow Switch