G:Sonic & Knuckles

T:Sonic & Knuckles Codes Only (On Its Own)

C:Start With 1 Life Instead Of 3|AFKT-AAG0|Galoob|
C:Start With 2 Lives|AKKT-AAG0|Galoob|
C:Start With 4 Lives|AVKT-AAG0|Galoob|
C:Start With 5 Lives|AZKT-AAG0|Galoob|
C:Start With 7 Lives|A7KT-AAG0|Galoob|
C:Start With 9 Lives|BFKT-AAG0|Galoob|
C:Start With 25 Lives|DFKT-AAG0|Galoob|
C:Start With 50 Lives|GKKT-AAG0|Galoob|
C:Start With 99 Lives|NPKT-AAG0|Galoob|
C:Infinite Lives|K2WA-CA4J|Galoob|
C:Rings Stay In Special Stage|RCSA ACA6|hybrid|
C:Make Rings And All Red Spheres Turn Into Rings|RCST ACAJ|hybrid|

T:Sonic & Knuckles (On Its Own) And With Sonic 3 Game Attached Codes

C:Don't Lose Rings When Hit|AWXT-CA4C|Galoob|
C:Infinite Time|HXRT-AA6A|Galoob|
C:Keep Shields (Fire, Water, Lightning) When Hit|96BA-CAG6<br>98MA-CAF0|Galoob|
C:Keep Rings Between Levels|AKVT-AA76<br>AMNA-EA24|Galoob|
C:Super Shoes Don't Run Out With Time|ATGT-CA3Y|Galoob|
C:Sonic Can Always Double Jump (Can't Use Water Shield Or Become Super Sonic)|RENT-C6YA|Galoob|
C:Sonic Can Always Use Fireball Spin Dash (Can't Double Jump, Bounce, Or Become Super Sonic)|RENT-C6V6|Galoob|
C:Only 1 Blue Sphere Needed To Get A Chaos Emerald|RGSA-A6YY|Galoob|
C:Sonic Jumps As High As Knuckles (Slightly Lower Than Usual)|AANA-CNA0|Galoob|
C:High Jump For Sonic|4ANA-CRA0|Galoob|
C:Super Jump For Sonic|2ANA-CWA0|Galoob|
C:Mega Jump For Sonic|AANA-C4A0|Galoob|
C:Orbital Jump For Sonic|AANA-DYA0|Galoob|
C:Knuckles Jumps As High As Sonic (Slightly Higher Than Usual)|TB5T-CNCR|Galoob|
C:High Jump For Knuckles|PV5T-CRCR|Galoob|
C:Super Jump For Knuckles|AB5T-CWCR|Galoob|
C:Mega Jump For Knuckles|AB5T-C2CR|Galoob|
C:Orbital Jump For Knuckles|AB5T-DTCR|Galoob|
C:Rings Worth 2 In Special Stage|ALNA-AACR|Galoob|
C:Rings Worth 3 In Special Stage|ARNA-AACR|Galoob|
C:Rings Worth 4 In Special Stage|AWNA-AACR|Galoob|
C:Rings Worth 5 In Special Stage|A0NA-AACR|Galoob|
C:Rings Worth 10 In Special Stage|BLNA-AACR|Galoob|
C:Only 6 Chaos Emeralds Needed To Become Super Sonic|A2NT-CAG6|Galoob|
C:Only 5 Chaos Emeralds Needed To Become Super Sonic|AYNT-CAG6|Galoob|
C:Only 4 Chaos Emeralds Needed To Become Super Sonic|ATNT-CAG6|Galoob|
C:Only 3 Chaos Emeralds Needed To Become Super Sonic|ANNT-CAG6|Galoob|
C:Only 2 Chaos Emeralds Needed To Become Super Sonic|AJNT-CAG6|Galoob|
C:Only 1 Chaos Emerald Needed To Become Super Sonic|AENT-CAG6|Galoob|
C:Become Super Sonic Without Any Chaos Emeralds|AANT-CAG6|Galoob|
C:100 Rings Needed To Become Super Sonic Instead Of 50|NTNT-CAHL|Galoob|
C:40 Rings Needed To Become Super Sonic|FANT-CAHL|Galoob|
C:25 Rings Needed To Become Super Sonic|DENT-CAHL|Galoob|
C:10 Rings Needed To Become Super Sonic|BJNT-CAHL|Galoob|
C:1 Ring Needed To Become Super Sonic|AENT-CAHL|Galoob|
C:Become Super-Duper Sonic Without Any Emeralds (You Still Need 50 Rings Unless Using One Of The Above Codes)|AANT-CAGY<br>AAPA-CAB8|Galoob|
C:Rings Aren't Used Up As Super (Or Super-Duper) Sonic/Knuckles|NTPT-CA50|Galoob|
C:Bonus Round Always Activated After Every Checkpoint|RHJA-E60L|Galoob|
C:Bonus Round Is Always Slot MachIne|BXLA-EA5G|Galoob|
C:Bonus Round Is Always Glowing Spheres|A5LA-EA5G|Galoob|
C:Only 6 Chaos Emeralds Needed To Become Super Knuckles|A36A-CACW|Galoob|
C:Only 5 Chaos Emeralds Needed To Become Super Knuckles|AZ6A-CACW|Galoob|
C:Only 4 Chaos Emeralds Needed To Become Super Knuckles|AV6A-CACW|Galoob|
C:Only 3 Chaos Emeralds Needed To Become Super Knuckles|AP6A-CACW|Galoob|
C:Only 2 Chaos Emeralds Needed To Become Super Knuckles|AK6A-CACW|Galoob|
C:Only 1 Chaos Emerald Needed To Become Super Knuckles|AF6A-CACW|Galoob|
C:Become Super Knuckles Without Any Chaos Emeralds|AB6A-CACW|Galoob|
C:100 Rings Needed To Become Super Knuckles Instead Of 50|NV6A-CADA|Galoob|
C:40 Rings Needed To Become Super Knuckles|FB6A-CADA|Galoob|
C:25 Rings Needed To Become Super Knuckles|DF6A-CADA|Galoob|
C:10 Rings Needed To Become Super Knuckles|BK6A-CADA|Galoob|
C:1 Ring Needed To Become Super Knuckles|AF6A-CADA|Galoob|
C:Become Super-Duper Knuckles Without Any Emeralds (You Still Need 50 Rings Unless Using One Of The Above Codes)|AB6A-CACL<br>AB6A-CAHR|Galoob|
C:Can't Drown|ACCT-CA2R|Galoob|

T:Knuckles In The Sonic 2 Game Codes

C:Knuckles Doesn't Lose Rings When Hit|AX6D-AA3W|Galoob|
C:Infinite Time|HWLX-GA2Y|Galoob|
C:Rings Worth 2|SD5X-BJT2|Galoob|
C:Rings Worth 3|SD5X-BNT2|Galoob|
C:Rings Worth 4|SD5X-BTT2|Galoob|
C:Rings Worth 5|SD5X-BYT2|Galoob|
C:Rings Worth 6|SD5X-B2T2|Galoob|
C:Rings Worth 7|SD5X-B6T2|Galoob|
C:Rings Worth 8|SD5X-BAT2|Galoob|
C:Knuckles Starts With 1 Life Instead Of 3|AE5X-AAFY|Galoob|
C:Knuckles Starts With 5 Lives|AY5X-AAFY|Galoob|
C:Knuckles Starts With 7 Lives|A65X-AAFY|Galoob|
C:Knuckles Starts With 9 Lives|BE5X-AAFY|Galoob|
C:Knuckles Starts With 25 Lives|DE5X-AAFY|Galoob|
C:Knuckles Starts With 50 Lives|GJ5X-AAFY|Galoob|
C:Knuckles Starts With 75 Lives|KN5X-AAFY|Galoob|
C:Knuckles Starts With 99 Lives|NN5X-AAFY|Galoob|
C:InfInite Lives|JV1D-CA6W|Galoob|
C:High Jump For Knuckles|PVWD-CRDC|Galoob|
C:Super Jump For Knuckles|ABWD-CWDC|Galoob|
C:Mega Jump For Knuckles|ABWD-C2DC|Galoob|
C:Orbital Jump For Knuckles|ABWD-DTDC|Galoob|

T:Other Codes

C:Level Select|AJNA-AA32|Galoob|
C:Super Knuckles|AB6A-CACW|Galoob|
C:Super Knuckles In 1 Ring|AF6A-CADA|Galoob|
C:High Jump For Knuckles|AANA-DYAO|Galoob|
C:Enter Debug Mode By Pressing Down|ZAPT-CRH0|Galoob|
C:Never Drown|ACCT-CA6W|Galoob|
C:Music Still Plays When You Pause The Game|AALA-AAA8|Galoob|
C:Sonic, Knuckles And Tails Are Completely Black|XA7T-AAY8|Galoob|
C:Keep Rings Between Levels|AKVT-AA76|Galoob|
C:Rings Leave Sparkles In The Special Stages|RGSA-A6AN|Galoob|
C:Blue Spheres Disappear And Count As Rings|RGSA-A6WY|Galoob|
C:The Clock Runs Fast But When It Reaches 10 Minutes It Returns To 9 Minutes|HXRT-AC6A|Galoob|
C:Invincibility|NTBT-CB50|Galoob|
C:No Spin When JumpIng|AANA-DYYY|Galoob|
C:Sonic Uses Hyper Sonic's Flash Attack By Pressing A, B Or C Twice|RENT-CNA6|Galoob|
C:Extremely Fast Game|WAPT-D2BO|Galoob|
C:Sonic Never Gets Dashing|AAXT-CBA4|Galoob|
C:When Hit Your Rings Fall From The Sky!|AWXT-CADA|Galoob|
C:9 Lives|BFKT-AAGO|Galoob|
C:50 Lives|GKKT-AAGO|Galoob|
C:Infinite Lives|K2WA-CA4J|Galoob|