G:Batman: Return of The Joker

C:Protection From Enemy Bullets|SZXZONSE|Galoob|
C:Protection From Collisions|SZSZKXSE|Galoob|
C:Protection From "Electric Grids"|SXSATXSE|Galoob|
C:Start With 1 Life|AEXILGZA|Galoob|
C:Start With 100 Lives|GVXILGZA|Galoob|
C:Each Backpack Energy Capsule Counts As Two|GAVXVLZA|Galoob|
C:Each Backpack Energy Capsule Counts As Four|AAVXVLZE|Galoob|
C:Invincibility Lasts Until Next Stage|AAKOPIZA|Galoob|
C:Start With 7 Backpack Energy Capsules Instead Of None|GEOSPKVN|Galoob|
C:Start Game With 3 Life Increments Instead Of 8|GEOSTKTA|Galoob|
C:Continue Game With 3 Life Increments Instead Of 8|GASOTOTA|Galoob|
C:Infinite Lives|SZXSZSVK|Galoob|
C:Don't Get Stunned When Hit|GXEUIOSE|Galoob|
C:Stand Your Ground|AEUUAPGA<BR>GXKLAOKE|Galoob|
C:Intense Knock-Nack When Hit|VNULTONN<BR>PEUUGPAA|Galoob|With this code you may get stuck or die if you get knocked into a wall.
C:Game Freezes When You Get A Backpack Energy Capsule|YAVXULZE|Jon Giusti and Cal Leingang (Geosponge@aol.com)|
C:Darker Colour|SOTILL|Daniel T|
C:The Evil Code!|KATOES|Daniel T|Boxes cannot be broken and enemies cannot be killed.
C:Softer Music|NUTAIS|Daniel T|
C:Where Is Batman?|OOPSYY|Daniel T|
C:Batman Can Only Shoot Upwards Until He Manages To Pick Up A Power Weapon|PILONS|Daniel T|
C:Changes Colour|ANZAST|Daniel T|
C:Start With 9 Lives|YEXILGZE|?|
C:No Damage From Bullets Or Missiles|GZXZONSE|?|
C:No Damage From Objects Or Enemies|GZSZKXSE|?|
C:Invincible In Boss Fights|SZVUIASE|DocLathropBrown|Note: Your Health counter will lower, but it won't ever go below 79,000 something. Then, it goes back up to 81,000 or so. You can be harmed, but never killed! Now sit back and enjoy the Joker's long-awaited ass-whooping!
C:Walk Through Enemies And Projectiles After Being Hit Once|SXEUIOSE|DocLathropBrown|Note: This code does not work on spikes, so be careful. Also, every time after you enter a new 'room' or start a new level, you must get hit again to re-activate the code.