Mega Man 2 (USA):
ASEAGIEI
LEOEYITA
XVVEIIAV
IEVAYITA
LAKEGYTA
LAUSTLZA - Multijump and minimal pushback from getting hit. This is a updated version of the code that didn't work correctly (on page 2). nolberto82 still has the better version as it uses only three codes, this alternative is mainly created to expose game mechanics. Two codes added as well to cover for taking hit and jumping from a ladder. You won't be able to multijump if you take a energy cell while in the air (weapon or health). In water Mega Man jumps very high unfortunately when using this code.
GEUETZLA
OXXEVLSV - Wrap to the top when you fall down bottomless pit, you also wrap to the bottom if you jump over the top of the screen. Normal screen transitions work normally (jumping down and climbing down).
AAVPTZGA - Freeze enemies and bosses. Uses the Flash stopper routine, but I seem to remember that bosses weren't affected by that, when that routine is always enabled (as with this code) then it seems to stop also bosses, only tested on Wood Man's stage though so the effect may differ with other bosses. The Mech Dragon on Dr. Wily's stage doesn't appear when this code is used, will try to fix that, it does appear if you disable the code (thank you Unicode for mentioning it to me).
SZVPLZSX
LAVPGXXX
PAVPIZEY
XTVPTZGE
ZIVOAZGA - Freeze enemies and bosses, don't freeze Mecha Dragon (enables the screen to scroll and the Mecha Dragon to appear). Works by enabling the flash stopper routine everywhere but at the Mecha Dragon. At the second stage other problems will occur though as the boss at that stage freezes when it is indestructable, another workaround is needed for that (like a code to shoot enemies instead of the bullets bouncing off), I'm working on that now. I'll have this code as a alternative version in the database, as users may still want to use the shorter version prior to the Mech Dragon boss. I tried to find a code that just stops the enemies in their movement routine, but it turns out that Megaman uses the same routine and it just didn't work
AAVTIVPZ
AASVZTGL
AEETXPZA
OZNVYTSV
AAEZYTIL - Destroy indestructable objects/enemies/bosses. All enemies are destroyed with one shot. Only works with regular weapon. Bosses still requires multiple shots to be killed even if their defense is up. If you destroy the enemyblocks of Boss #2 in Dr.Wily's castle before they are "put together" it won't decrease health, so make sure you shoot them when they have assembled. Or you can use AASOLUGA so that the boss health doesn't need to be zero for it to be destroyed, you still have to be careful to only shoot when it is assembled but increases the odds
The above code alone doesn't solve the freeze enemies problem with the second Dr.Wily boss though as health isn't decreased for the boss when destroying the enemyblocks while they are indestructable.
ZASOZGPE
XUEOAKVV
ZLNOPGSL - Boss #2 of Dr.Wily's castle behaves normally with freeze enemy code enabled. Have tested and the game can now be completed with freeze enemy code enabled (the one that doesn't freeze Mecha Dragon), though you will need jump in mid-air and walk through walls codes as well since the platforms that should move you around the pre-defined path doesn't move in stage 4 of Dr.Wily's castle.
The freeze enemies code has been updated again today (2020-02-20):
AAVPTZGA
AASPGGPA
AASOZGPA - Freeze enemies and bosses (not all bosses, just some), enables the screen to scroll and Mecha Dragon to appear, the second boss of Dr.Wily's castle isn't frozen so that it can be defeated. Since this code is only three codes long it will replace the existing one in the database. Mecha Dragon will be invisible (due to the frozen state) but you can shoot into the air where it used to be and it will be instantly defeated (as the health is zero).
RAM:
ASEAGIEI
LEOEYITA
XVVEIIAV
IEVAYITA
LAKEGYTA
LAUSTLZA - Multijump and minimal pushback from getting hit. This is a updated version of the code that didn't work correctly (on page 2). nolberto82 still has the better version as it uses only three codes, this alternative is mainly created to expose game mechanics. Two codes added as well to cover for taking hit and jumping from a ladder. You won't be able to multijump if you take a energy cell while in the air (weapon or health). In water Mega Man jumps very high unfortunately when using this code.
GEUETZLA
OXXEVLSV - Wrap to the top when you fall down bottomless pit, you also wrap to the bottom if you jump over the top of the screen. Normal screen transitions work normally (jumping down and climbing down).
AAVPTZGA - Freeze enemies and bosses. Uses the Flash stopper routine, but I seem to remember that bosses weren't affected by that, when that routine is always enabled (as with this code) then it seems to stop also bosses, only tested on Wood Man's stage though so the effect may differ with other bosses. The Mech Dragon on Dr. Wily's stage doesn't appear when this code is used, will try to fix that, it does appear if you disable the code (thank you Unicode for mentioning it to me).
SZVPLZSX
LAVPGXXX
PAVPIZEY
XTVPTZGE
ZIVOAZGA - Freeze enemies and bosses, don't freeze Mecha Dragon (enables the screen to scroll and the Mecha Dragon to appear). Works by enabling the flash stopper routine everywhere but at the Mecha Dragon. At the second stage other problems will occur though as the boss at that stage freezes when it is indestructable, another workaround is needed for that (like a code to shoot enemies instead of the bullets bouncing off), I'm working on that now. I'll have this code as a alternative version in the database, as users may still want to use the shorter version prior to the Mech Dragon boss. I tried to find a code that just stops the enemies in their movement routine, but it turns out that Megaman uses the same routine and it just didn't work

AAVTIVPZ
AASVZTGL
AEETXPZA
OZNVYTSV
AAEZYTIL - Destroy indestructable objects/enemies/bosses. All enemies are destroyed with one shot. Only works with regular weapon. Bosses still requires multiple shots to be killed even if their defense is up. If you destroy the enemyblocks of Boss #2 in Dr.Wily's castle before they are "put together" it won't decrease health, so make sure you shoot them when they have assembled. Or you can use AASOLUGA so that the boss health doesn't need to be zero for it to be destroyed, you still have to be careful to only shoot when it is assembled but increases the odds

The above code alone doesn't solve the freeze enemies problem with the second Dr.Wily boss though as health isn't decreased for the boss when destroying the enemyblocks while they are indestructable.
ZASOZGPE
XUEOAKVV
ZLNOPGSL - Boss #2 of Dr.Wily's castle behaves normally with freeze enemy code enabled. Have tested and the game can now be completed with freeze enemy code enabled (the one that doesn't freeze Mecha Dragon), though you will need jump in mid-air and walk through walls codes as well since the platforms that should move you around the pre-defined path doesn't move in stage 4 of Dr.Wily's castle.
The freeze enemies code has been updated again today (2020-02-20):
AAVPTZGA
AASPGGPA
AASOZGPA - Freeze enemies and bosses (not all bosses, just some), enables the screen to scroll and Mecha Dragon to appear, the second boss of Dr.Wily's castle isn't frozen so that it can be defeated. Since this code is only three codes long it will replace the existing one in the database. Mecha Dragon will be invisible (due to the frozen state) but you can shoot into the air where it used to be and it will be instantly defeated (as the health is zero).
RAM:
Code:
Megaman's state: [COLOR=white]002C:[/COLOR] [COLOR=white]00:[/COLOR] Zipping down/Killed. [COLOR=white]01:[/COLOR] Is set when falling down a pit, but also when getting hit. [COLOR=white]02:[/COLOR] Get hit, [COLOR=white]01[/COLOR] is set afterwards. [COLOR=white]03:[/COLOR] Standing. [COLOR=white]04:[/COLOR] Begin to walk. [COLOR=white]05:[/COLOR] Walk. [COLOR=white]06:[/COLOR] Fall. [COLOR=white]07:[/COLOR] Set after you land while moving. [COLOR=white]08:[/COLOR] Land while moving, [COLOR=white]07[/COLOR] is set afterwards. [COLOR=white]09:[/COLOR] On ladder. [COLOR=white]0A: [/COLOR]Climb [COLOR=white]0B: [/COLOR]Finish stage (zip).
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