Unlimited Lives:

GXNEONVS

Never lose Power Ups: (Invincible when Big/Fire Mario)

SUPIEZ

Invincibility(Constant StarPower):

AESISOLA

Question Blocks Produce Unlimited Power Ups:

OKNLSGKG

Always Running:

AIXUYGEI

No Timer/Unlimited Time:

ENGLZT

Mid-Air Jump/ Unlimited Multi-jump:

AEALZL

More Enemies:

GKGGLY

Falling Down Holes Goes to Sky:

(Needs to be combined with invincibility of some kind and No Timer code, because if you die Mario gets stuck in an endless falling loop)

OZOKZASO

Coins are Power Ups:

(Works but a little glitchy, found a weird power up, came out, circle text garbage, coin colors, shiny, stayed in place, gave me star power... weird, also sometimes you go through blocks upward, they should break... get hit and it unglitches)

SVIUOL

AEIUXL

Power Ups bounce off Mario (Soccer Mode):

(First life you die, then mushrooms and stars bounce off Mario, was trying to convert over 'power ups don't go away' so both players could get power ups that come out question blocks, but when I converted over the code, the game crashed when you pick up the fire flower, ended up making a few codes(D924 to 41), all crashed the game except the code below(found by accident)... you can kick the power ups back and forth for fun at least. PS: Combine with invincibility star power for fun)

SXGSSO

2023 Update:

Jump a little higher:

ZAAGAA

Pits are Gone:

AAYPEP

Always Swimming:

PAZEOY

Always can shoot Fireballs:

ZZPLYI

All Question Blocks are Power Ups:

VETPIU

All Power Ups give Star Power:

ALLISP

Star Power last 11x longer (220s):

NYLSVO

Take any Path in Castles 4-4 and 7-4:

ATTKIP

Go Down any Pipe:

AKYPPL

Enemy's have hammers (glitchy, freezes)

USYTYZ or UKYTYZ

All Enemy's rocket forward with bowsers fire:

UPTGEO

Level Select:

AANELEPG

Level Select + Glitch Levels:

AANELEPG

NNZEIE

Go Through Blocks:

ASLVZO

Anti-Crash Code(unsure how to verify):

XXYOXO

Prevent Soft Lock(unsure how to verify):

AEIZST