All of the codes in Blue are by Evil_Spock

ALTERED PHYSICS:
ALLPTT: BulletWarp: When one of your bullets is still on the screen, hit SELECT to warp to the top of the screen!
ALTOKG: When you hold the jump button down, you float. You also will fall very slowly when you walk off a ledge.
ALYPNG: Everything floats away...
XYLPNG: Jump up and don't come down.

Low Gravity Codes - Superior to Galoob's High Jump codes because you have more time to maneuver in the air, and all enemies are affected. (may glitch game when fighting some bosses)
ALTOOG: Slightly higher jump.
AZTOOG: Jump about half a screen high.
LPTOOG: Jump to the top of the screen.

MUSIC CODES:
AULPYZ: Weird Music 1: *UNTESTED*
AUZPYG: Weird Music 2: Notes have a "drop" effect *UNTESTED*

ENEMIES:
AUZYGL Kill bosses with one shot.
ATGYGT The rotating gun things shoot constantly.
AUPYGT The rising bomb things (in Bombman Stage) don't explode.

GAME WARPS:
ZVLYGL: When you arrive at the boss, you will warp back to Stage Select and that boss will be beaten.
ALTPYA: Goes straight from title screen to CutsMan Stage.
APTPYA: Press START and play the CutsMan level while you're still on the title screen.
AVLYGL: When you arrive at the boss, you warp to a glitched Wily level 4.

PASPLAZA- Start with one life
ZAKGNIPA- Laddermania on Cutman Stage
LAKGNIPA- Die when you jump on Cutman Stage
GAKGNIPA- Icy Cutman Stage
IAKGNIPA- All ground jumpthroughable on Cutman Stage