Author Topic: NES 'Game Code Modifications' :p  (Read 1625 times)

Offline Saturn

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NES 'Game Code Modifications' :p
« on: December 15, 2015, 01:29:58 AM »
http://www.retrovideogamer.co.uk/index.php?topic=3008.150]Never Played NES thread. I'd watched the videos and wanted to see more of the games but not while taking the time to hone my skills as some legendary gamer and practicing until I could beat them 'fairly'. With these hacks and a hex editor, you can breeze right through them unscathed 8)

Friday the 13th (USA):
[spoiler]Infinite Children 1; go to address 003863 change CE to AD
Infinite Children 2; go to address 003855 change 78 to 75 (after all other counselors and kids are dead, leaves you with 15)
Invincibility; go to address 002F1D change 20 to AD
Infinite Energy; go to address 005D1C change 8D to AD
Throw Rocks Straight; go to address 004295 change A5 to 07
Turbo Running 1; go to address 003274 change B9 to AD
Turbo Running 2; go to address 003275 change 68 to 1F
(note to self: jump around a LOT to acquire items/weapons)
[/spoiler]
Splatterhouse (Japan);
[spoiler]Infinite Health; go to address 0160B8 change CE to AE
Invincible Against Enemies; go to address 016060 change BD to 60
Invincible Against Spikes; go to address 01D072 change C9 to 60[/spoiler]

Shadow of the Ninja (USA):
[spoiler]Infinite Health; go to addresses 008C7D & 018C7D change 9D to BD
Infinite Shurikens on pickup; go to address 009850 change DE to BD
Infinite Bombs on pickup; go to address 00978E change DE to BD
Don't lose health from falling; go to address 01D57C change 9D to BD[/spoiler]

This one just because I liked it as a youth:
Section Z (USA):
[spoiler]Infinite Lives; go to address 019DA3 and change C6 to A5
Almost Invincible (3); go to addresses 0197C0, 01F7C0 & 01F8E7 and change AD to 60 at all of them (can still get crushed behind a wall)
Enable Autofire; go to address 019F0B and change F5 to F7[/spoiler]

Crackout (Europe):
[spoiler]Infinite Lives/balls; go to address B88A change C6 to A5[/spoiler]


Crisis Force (Japan):
[spoiler]Invincibility; go to address 0016EF change AD to 60
Infinite Lives; go to address 00070D change D6 to B5
Infinite Bombs; go to address 00062C change DE to BD[/spoiler]


Over Horizon (E):
[spoiler]Invincibility; go to address 01DF00 change C6 to A5
Infinite Lives; go to address 003DC0 change CE to AD[/spoiler]


Edit: one more 8)
Super Mario Bros 2 (Lost Levels):
[spoiler]Always Have Fireball; go to address 0081A0 change AD to EE
Start With 99 Lives; go to address 0005F4 change 02 to 63
Infinite Time; go to address 00830E change 20 to AD[/spoiler]

Snow Brothers (USA):

[spoiler]Invincibility; go to address 010EC6 change DE to BD
Infinite Chances; go to address 01100B change D6 to A5[/spoiler]


DieHard (U):
[spoiler]Infinite shots on all guns:
Search: 199D3506A52CF00585682098C6A5
Change: 199D3506A52CF00585682098C660
1 instance

Infinite Time 1 of 2:
Search: F064C6AF1060A9018D8A
Change: F064A5AF1060A9018D8A
1 instance

Infinite Time 2 of 2:
Search: A9018D8A07A93B85AFC6
Change: A9018D8A07A93B85AFA5
1 instance

Invincibility:
Search: A8A5A5D022A5A8D00620A0
Change: A800A5D022A5A8D00620A0
1 instance

Radio Worth All Items:
Search: 790920857960AD79070910
Change: 790920857960AD790709FF[/spoiler]

Teenage Mutant Ninja Turtles (USA):
[spoiler]Never Take Damage From Non-Killing Seaweed (All Turtles):
Search: 997700A5D3F003EEEC03
Change: AC7700A5D3F003EEEC03
1 instance

Infinite Health:
Search: 078500A467B97700F009
Change: 078500A467B97700D009
1 instance
Highly recommend saving state when approaching fire pits! (if not, you won't die when you fall in and have to restart the game)

Never lose rope:
Search: 6FA901855EA900853AC6
Change: 6FA901855EA900853AA5
1 instance

Pick-Up 99 Weapons At A Time:
Search: 997300A901855BA914D0
Change: 997300A901855BA963D0
1 instance[/spoiler]

Teenage Mutant Ninja Turtles II - The Arcade Game (USA)
[spoiler]Almost infinite health (doesn't protect against the easy to avoid wall mounted lasers in Scenes 5 & 7):
Health 1/4:
Search: 9D7F04BDA2049D6D04A9
Change: BD7F04BDA2049D6D04A9
1 instance

Health 2/4:
Search: 9D6805F007100FA9009D
Change: BD6805F007100FA9009D
1 instance

Health 3/4:
Search: 9D3205A9409DD405A907
Change: BD3205A9409DD405A907
2 instances

Health 4/4:
Search: 9D6805A40BA901996206
Change: BD6805A40BA901996206
2 instances

Infinite lives:
Search: E901994D004820ADDC6810
Change: E900994D004820ADDC6810

One Hit Kills Enemy:
Search: D002A902850EADD606D0
Change: D002A902850EADD60610[/spoiler]

Teenage Mutant Ninja Turtles III - The Manhattan Project (USA)
[spoiler]Almost Infinite Energy (The special spin and slash move still drains it)
Energy 1/3:
Search: 019574B57609019576DE
Change: 019574B57609019576BD
1 instance

Energy 2/3:
Search: B017A9159D3105A9109D
Change: B017A9159D3105A910BD
1 instance

Energy 3/3:
Search: 94D4BDF10438FDEF049D
Change: 94D4BDF10438FDEF04BD
1 instance

Infinite lives 1/3:
Search: 6A2920D007B56A38E901
Change: 6A2920D007B56A38E900
1 instance

Infinite lives 2/3:
Search: 038DA003600001010101
Change: 038DA003600001010100
1 instance

Infinite lives 3/3:
Search: 02F1BFC2F9F1BDC20101
Change: 02F1BFC2F9F1BDC20100
1 instance[/spoiler]

Dick Tracy (U):
[spoiler]Infinite energy:
Search: D0128D3E04AD630638ED
Change: D0128D3E04AD6306382C
1 instance

Infinite hand gun bullets:
Search: CE6107AD5304F0032081
Change: AD6107AD5304F0032081
1 instance

Infinite machine gun bullets:
Search: 03F0034C60A2EE6107CE
Change: 03F0034C60A2EE6107AD
1 instance

Infinite super punches:
Search: CEBA06D00BA9008DB806
Change: ADBA06D00BA9008DB806
1 instance

Infinite tear gas:
Search: 6D05ADB806C904D022CE
Change: 6D05ADB806C904D022AD
1 instance[/spoiler]

M.C. Kids (USA):
[spoiler]Infinite lives:
Search: 8D4907AD7F05209CD58D
Change: 2C4907AD7F05209CD58D

Infinite Health:
Search: CE8005AD1004D005A981
Change: AD8005AD1004D005A981

Access Any Level on the Map:
Search: 018DFE0360A9019D4406
Change: 008DFE0360A9019D4406[/spoiler]

Dragon's Lair (U):
[spoiler]Infinite candle energy 1/2:
Search: CE3103D008A9008D1707
Change: AD3103D008A9008D1707
1 instance

Infinite candle energy 2/2:
Search: CE31036020A2D820FCF9
Change: AD31036020A2D820FCF9
1 instance

Infinite Health: (Works great but a lot of attacks are single hit kills with no damage or regard to health)
Search: 03DD2F03D00160B015DE
Change: 03DD2F03D00160B015BD
1 instance

Infinite lives:
Search: FFA0012034D8AD7D06F0
Change: 00A0012034D8AD7D06F0
1 instance

Invincible 1/3: (Can still die if you fall down a pit, causes some visual glitches and an enemy on stage 3 won't die as he apparently is invincible too)
Search: 200FF9202FE5B0016020
Change: 200FF9202FE5B0016060
1 instance

Invincible 2/3:
Search: D0C2A042C4BB63D1AEBE
Change: 24C2A042C4BB63D1AEBE
1 instance

Invincible 3/3:
Search: D00AE615D002E6164C76
Change: 240AE615D002E6164C76
1 instance

Protection!: (This is an original code from Galoob but not sure what it does)
Search: 8D9706A9038D9806A9FC
Change: 8D9706A9038D9806A900[/spoiler]

Mike Tyson's Punch-Out!! (USA):
[spoiler]Never Lose Stars:
Search: 4003F04430D4AD4103F0
Change: 4003F04430D4AD410330
1 instance

Infinite Time:
Search: 52E9648D0603CE1103EE
Change: 52E9648D0603CE1103AD
1 instance

Never Lose Hearts:
Search: F0578A3885E7AD2403E5
Change: F0578A3885E7AD240324
1 instance

Infinite Health:
Search: A20285E7BD9003CA38E5
Change: 600285E7BD9003CA38E5
1 instance[/spoiler]

Life Force (USA):
[spoiler]Infinite lives:
Search: D634A91C2042E6F67060
Change: 2434A91C2042E6F67060
1 instance

Keep pods after death:
Search: 957860F686B586C9024C
Change: 247860F686B586C9024C
1 instance

No Damage:
Search: 957CA9889D0E03A90495
Change: 957CA9889D0E03A904A5
1 instance

Player 1 And 2 Always Have 99 Lives:
Search: 10FA851C853E853FA903
Change: 10FA851C853E853FA987
1 instance[/spoiler]

Batman - The Video Game (USA):
[spoiler]Invulnerability: ATOPEZVG
Search: C6B7A98085CCBDC0050A
Change: 60B7A98085CCBDC0050A
1 instance

Infinite Weapons: SXEPOGSA
Search: 85B838E507C9649004A9
Change: A5B838E507C9649004A9
1 instance

Infinite lives: SZUGGTVG
Search: C6BEA203A5B8D002A200
Change: A5BEA203A5B8D002A200
1 instance[/spoiler]

Contra (USA):
[spoiler]Invincibility:
Search: 2BB5AED097B5B0D00D20
Change: 2BB5AED097B5B0D00DAD
1 instance

Infinite Lives:
Search: D63260A901953860A540
Change: A53260A901953860A540
1 instance[/spoiler]

Super C (USA)
[spoiler]Infinite Lives:
Search: D653F6A0604830483048
Change: B553F6A0604830483048
1 instance

Both Characters Are Invincible (side scrolling stages):
Search: 0095B4B5B418691AA8B5
Change: 0095B4B5B418691AA895
1 instance

Invincibility Top Down Stages 1/2:
Search: A000C902601860B5C4F0
Change: A000C902601860B5C4D0
1 instance

Invincibility Top Down Stages 2/2:
Search: FDBC4807F002A003B9F0
Change: FDBC4807F002A003B9D0
1 instance

Infinite continues:
Search: 853F4CB2E8C63FD03FC6
Change: 853F4CB2E8C63FD03FA5
1 instance[/spoiler]

Contra Force (USA):
[spoiler]Infinite Lives:
Search: 282076E020C1F6A50A99
Change: 282076E020C1F6A50AB9
1 instance[/spoiler]

MegaMan (USA)
[spoiler]Infinite Energy (not against spikes):
Search: 856AF002B007A900856A
Change: A56AF002B007A900856A
1 instance

Infinite Lives:
Search: 4785B4855585948595C6
Change: 4785B4855585948595A9
1 instance
 
Infinite Weapons (Once You Have Them):
Search: FDDEA8956A6001010101
Change: 0DDEA8956A6001010101
1 instance
 
Invincibility against spikes 1/2:
Search: CA10C398600804024C19
Change: CA10C398600804024C18
1 instance

Invincibility against spikes 2/2:
Search: C901D002A00198604C19
Change: C901D002A00198604C18
1 instance[/spoiler]

Legend of Zelda, The (USA)

[spoiler]Don't take damage from anything:
Search: AD7006C50E901938E50E
Change: 607006C50E901938E50E
1 instance

255 Rupies trick:
https://www.youtube.com/watch?v=ZI_lk_dALz0

All Items For Free 1/2: (Have to have enough money to afford it)
Search: AD7E06F00BCE7E06CE6D
Change: AD7E06F00BCE7E06AD6D
1 instance

All Items For Free 2/2: (Have to have enough money to afford it)
Search: F00EAD6D06DD30049043
Change: F00EAD6D06DD30049000
1 instance

Infinite bombs: (Once you have at least one)
Search: CE5806A9208D0406A900
Change: AD5806A9208D0406A900
1 instance

Sword Beam Doesn't Stop After Hitting Enemies:
Search: B5AC0A903DAD6106F035
Change: D0AC0A903DAD6106F035
1 instance

Create character with 16 life hearts:
Search: 2291C0C8A9FF91C0A025
Change: FF91C0C8A9FF91C0A025
1 instance
***********************************************************************
A few extras to mix and match, just for good measure..

Don't lose rupies when buying:
Search: 7E06CE6D06A9108D0406
Change: 7E06AD6D06A9108D0406
1 instance

Buy Keys for free:
Search: A0643C5A640A50FA3C00
Change: A0003C5A640A50FA3C00

Buy the Blue Candle for free:
Search: 0A1E32821450A0643C5A
Change: 0A1E32821450A064005A

Buy the Large Shield for free:
Search: A0643C5A640A50FA3C00
Change: 00643C5A640A50FA3C00

All Items For Free 1/2:
Search: 7E06CE6D06A9108D0406
Change: 7E06AD6D06A9108D0406

All Items For Free 2/2:
Search: F00EAD6D06DD30049043
Change: F00EAD6D06DD30049000

Blue Ring is Free:
Search: 1450A0643C5A640A50FA
Change: 1450A0643C5A640A5000


Edit: Removed this from the main set as it crashes when trying to retrieve items in dungeons, like the bow in the first level, causing Link to get stuck in the dungeon where he would normally appear after reemerging from the stairs. (He can walk/run in place & turn but can't move forward)
Bombs Instantly Destroy All Hidden Caves in Rocks:
Search: 588F68A8B97E694829F0
Change: 308F68A8B97E694829F0
1 instance[/spoiler]

Nightmare on Elm Street, A (USA)
[spoiler]Invincibility:
Search: F039DEBA06D00BBD6405
Change: D039DEBA06D00BBD6405
1 instance

Infinite Zzz:
Search: DEC8061005A9009DC806
Change: ADC8061005A9009DC806
1 instance

Infinite lives:
Search: DE3901BD3901D01AFE7B
Change: BD3901BD3901D01AFE7B
1 instance

Infinite Health:
Search: 34B6BD1C062980D00FFE
Change: 34B6BD1C062980D00FBD
1 instance

9 continues:
Search: C903F0034C2881A9038D
Change: C903F0034C2881A9098D
1 instance[/spoiler]
« Last Edit: July 15, 2016, 21:03:03 PM by Saturn »

Offline TrekMD

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Re: NES 'Game Code Modifications' :p
« Reply #1 on: December 15, 2015, 03:40:15 AM »
Love the name of the thread.  Talk about a misnomer!  LOL

Going to the final frontier, gaming...

Offline zapiy

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Re: NES 'Game Code Modifications' :p
« Reply #2 on: December 20, 2015, 13:12:30 PM »
Brilliant work fella.. and lol Trek..
Own: Jaguar, Lynx, Dreamcast, Saturn, MegaDrive, MegaCD, 32X, GameGear, PS3, PS, PSP, Wii, GameCube, N64, DS, GBA, GBC, GBP, GB,  Xbox, 3DO, CDi,  WonderSwan, WonderSwan Colour NGPC

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #3 on: June 25, 2016, 23:55:11 PM »
Just did these hacks for DieHard and created a thread to document how I did it so I won't forget again if I go another 8 months without practice. Anyway, this game isn't so bad once it's playable. I saw it on an episode of AVGN and that spurred me to even the playing field as it looked interesting.

DieHard (U):
[spoiler]Infinite shots on all guns:
Search: 199D3506A52CF00585682098C6A5
Change: 199D3506A52CF00585682098C660
1 instance

Infinite Time 1 of 2:
Search: F064C6AF1060A9018D8A
Change: F064A5AF1060A9018D8A
1 instance

Infinite Time 2 of 2:
Search: A9018D8A07A93B85AFC6
Change: A9018D8A07A93B85AFA5
1 instance

Invincibility:
Search: A8A5A5D022A5A8D00620A0
Change: A800A5D022A5A8D00620A0
1 instance

Radio Worth All Items:
Search: 790920857960AD79070910
Change: 790920857960AD790709FF[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #4 on: June 26, 2016, 03:59:51 AM »
Did some hacks on this to see the end of the game after 27 years. Could NOT beat this in my youth and after working through it with infinite health, doubt I ever would have-given the amount of enemies and cheap deaths I witnessed
Below is the magic combination I found to work the best. Things like Invulnerability wouldn't let you disable bombs on the Dam (stage 2) so didn't really work effective for getting far even though it was nice not to get knocked back by enemies for a while there.

Teenage Mutant Ninja Turtles (USA):
[spoiler]Never Take Damage From Non-Killing Seaweed (All Turtles):
Search: 997700A5D3F003EEEC03
Change: AC7700A5D3F003EEEC03
1 instance

Infinite Health:
Search: 078500A467B97700F009
Change: 078500A467B97700D009
1 instance
Highly recommend saving state when approaching fire pits! (if not, you won't die when you fall in and have to restart the game)

Never lose rope:
Search: 6FA901855EA900853AC6
Change: 6FA901855EA900853AA5
1 instance

Pick-Up 99 Weapons At A Time:
Search: 997300A901855BA914D0
Change: 997300A901855BA963D0
1 instance[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #5 on: June 26, 2016, 05:46:10 AM »
Keeping with the turtles theme, here are some hacks for Teenage Mutant Ninja Turtles II - The Arcade Game (USA) that make it almost playable :p Never saw the end of this one either and although there was a little more to it than the first game, hardly worth the effort-like most NES games. Was glad to finish it after 26 years though 8)


Teenage Mutant Ninja Turtles II - The Arcade Game (USA)
[spoiler]Almost infinite health (doesn't protect against the easy to avoid wall mounted lasers in Scenes 5 & 7):
Health 1/4:
Search: 9D7F04BDA2049D6D04A9
Change: BD7F04BDA2049D6D04A9
1 instance

Health 2/4:
Search: 9D6805F007100FA9009D
Change: BD6805F007100FA9009D
1 instance

Health 3/4:
Search: 9D3205A9409DD405A907
Change: BD3205A9409DD405A907
2 instances

Health 4/4:
Search: 9D6805A40BA901996206
Change: BD6805A40BA901996206
2 instances

Infinite lives:
Search: E901994D004820ADDC6810
Change: E900994D004820ADDC6810

One Hit Kills Enemy:
Search: D002A902850EADD606D0
Change: D002A902850EADD60610[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #6 on: June 26, 2016, 07:04:49 AM »
Here are some rom hacks for Teenage Mutant Ninja Turtles III - The Manhattan Project (USA). Never played this one back in the day but looks like more of the same. Will finish it soon to see how the ending is but interest is waning :P

Teenage Mutant Ninja Turtles III - The Manhattan Project (USA)
[spoiler]Almost Infinite Energy (The special spin and slash move still drains it)
Energy 1/3:
Search: 019574B57609019576DE
Change: 019574B57609019576BD
1 instance

Energy 2/3:
Search: B017A9159D3105A9109D
Change: B017A9159D3105A910BD
1 instance

Energy 3/3:
Search: 94D4BDF10438FDEF049D
Change: 94D4BDF10438FDEF04BD
1 instance

Infinite lives 1/3:
Search: 6A2920D007B56A38E901
Change: 6A2920D007B56A38E900
1 instance

Infinite lives 2/3:
Search: 038DA003600001010101
Change: 038DA003600001010100
1 instance

Infinite lives 3/3:
Search: 02F1BFC2F9F1BDC20101
Change: 02F1BFC2F9F1BDC20100
1 instance[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #7 on: June 27, 2016, 21:19:26 PM »
Just watched this episode of AVGN, so had to hack it :D

Dick Tracy (U):
[spoiler]Infinite energy:
Search: D0128D3E04AD630638ED
Change: D0128D3E04AD6306382C
1 instance

Infinite hand gun bullets:
Search: CE6107AD5304F0032081
Change: AD6107AD5304F0032081
1 instance

Infinite machine gun bullets:
Search: 03F0034C60A2EE6107CE
Change: 03F0034C60A2EE6107AD
1 instance

Infinite super punches:
Search: CEBA06D00BA9008DB806
Change: ADBA06D00BA9008DB806
1 instance

Infinite tear gas:
Search: 6D05ADB806C904D022CE
Change: 6D05ADB806C904D022AD
1 instance[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #8 on: June 27, 2016, 21:59:18 PM »
Did these but still can't stand to play this game

M.C. Kids (USA):
[spoiler]Infinite lives:
Search: 8D4907AD7F05209CD58D
Change: 2C4907AD7F05209CD58D

Infinite Health:
Search: CE8005AD1004D005A981
Change: AD8005AD1004D005A981

Access Any Level on the Map:
Search: 018DFE0360A9019D4406
Change: 008DFE0360A9019D4406[/spoiler]

Offline TrekMD

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Re: NES 'Game Code Modifications' :p
« Reply #9 on: June 27, 2016, 23:24:36 PM »
You hacker, you!  LOL

Going to the final frontier, gaming...

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #10 on: June 29, 2016, 20:32:39 PM »
You hacker, you!  LOL
Yep, fun stuff. I like hacking the rom more than inputting Game Genie codes. I know if I ever return to one of these games it'll be to blaze through and not to test my skills or get good at them again :)

Some of the codes won't let you get through the game and others don't work the way as intended but here's at least infinite candle power and infinite lives to 'help' get through this game.
Dragon's Lair (U):
[spoiler]Infinite candle energy 1/2:
Search: CE3103D008A9008D1707
Change: AD3103D008A9008D1707
1 instance

Infinite candle energy 2/2:
Search: CE31036020A2D820FCF9
Change: AD31036020A2D820FCF9
1 instance

Infinite Health: (Works great but a lot of attacks are single hit kills with no damage or regard to health)
Search: 03DD2F03D00160B015DE
Change: 03DD2F03D00160B015BD
1 instance

Infinite lives:
Search: FFA0012034D8AD7D06F0
Change: 00A0012034D8AD7D06F0
1 instance

Invincible 1/3: (Can still die if you fall down a pit, causes some visual glitches and an enemy on stage 3 won't die as he apparently is invincible too)
Search: 200FF9202FE5B0016020
Change: 200FF9202FE5B0016060
1 instance

Invincible 2/3:
Search: D0C2A042C4BB63D1AEBE
Change: 24C2A042C4BB63D1AEBE
1 instance

Invincible 3/3:
Search: D00AE615D002E6164C76
Change: 240AE615D002E6164C76
1 instance

Protection!: (This is an original code from Galoob but not sure what it does)
Search: 8D9706A9038D9806A9FC
Change: 8D9706A9038D9806A900[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #11 on: June 29, 2016, 21:36:40 PM »
Love this game. I remember playing it endlessly back in '87-'88. One of the best games ever 8)

Mike Tyson's Punch-Out!! (USA):
[spoiler]Never Lose Stars:
Search: 4003F04430D4AD4103F0
Change: 4003F04430D4AD410330
1 instance

Infinite Time:
Search: 52E9648D0603CE1103EE
Change: 52E9648D0603CE1103AD
1 instance

Never Lose Hearts:
Search: F0578A3885E7AD2403E5
Change: F0578A3885E7AD240324
1 instance

Infinite Health:
Search: A20285E7BD9003CA38E5
Change: 600285E7BD9003CA38E5
1 instance[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #12 on: June 29, 2016, 21:47:25 PM »
Had this game when I was a kid. Beat it then legit, beating it now a whole lot easier :P

Life Force (USA):
[spoiler]Infinite lives:
Search: D634A91C2042E6F67060
Change: 2434A91C2042E6F67060
1 instance

Keep pods after death:
Search: 957860F686B586C9024C
Change: 247860F686B586C9024C
1 instance

No Damage:
Search: 957CA9889D0E03A90495
Change: 957CA9889D0E03A904A5
1 instance

Player 1 And 2 Always Have 99 Lives:
Search: 10FA851C853E853FA903
Change: 10FA851C853E853FA987
1 instance[/spoiler]

Offline Saturn

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Re: NES 'Game Code Modifications' :p
« Reply #13 on: June 30, 2016, 22:24:22 PM »
Ha, never beat this one as a kid but now it's smooth sailing ;D

Batman - The Video Game (USA):
[spoiler]Invulnerability: ATOPEZVG
Search: C6B7A98085CCBDC0050A
Change: 60B7A98085CCBDC0050A
1 instance

Infinite Weapons: SXEPOGSA
Search: 85B838E507C9649004A9
Change: A5B838E507C9649004A9
1 instance

Infinite lives: SZUGGTVG
Search: C6BEA203A5B8D002A200
Change: A5BEA203A5B8D002A200
1 instance[/spoiler]

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Re: NES 'Game Code Modifications' :p
« Reply #14 on: July 01, 2016, 01:26:18 AM »
One of the most epic games ever created. Me and a friend used to beat this back in the day in 2 player with 1 life each. Never died once and no cheats.
We were legends 8)

Contra (USA):
[spoiler]Invincibility:
Search: 2BB5AED097B5B0D00D20
Change: 2BB5AED097B5B0D00DAD
1 instance

Infinite Lives:
Search: D63260A901953860A540
Change: A53260A901953860A540
1 instance[/spoiler]