Sonic and Knuckles

CODES 1 THRU 10 ARE ONLY FOR THE SONIC & KNUCKLES GAME ALONE
1 AFKT-AAG0 Start with 1 life instead of 3
2 AKKT-AAG0 Start with 2 lives
3 AVKT-AAG0 Start with 4 lives
4 AZKT-AAG0 Start with 5 lives
5 A7KT-AAG0 Start with 7 lives
6 BFKT-AAG0 Start with 9 lives
7 DFKT-AAG0 Start with 25 lives
8 GKKT-AAG0 Start with 50 lives
9 NPKT-AAG0 Start with 99 lives
10 K2WA-CA4J Infinite lives

CODES 11 THRU 64 WORK FOR SONIC & KNUCKLES GAME ALONE AND
ALSO WITH SONIC 3 GAME ATTACHED
11 AWXT-CA4C Don't lose rings when hit
12 HXRT-AA6A Infinite time
13 96BA-CAG6 + 98MA-CAF0 Keep shields (fire, water, lightning) when hit
14 AKVT-AA76 + AMNA-EA24 Keep rings between levels
15 ATGT-CA3Y Super shoes don't run out with time

16 RENT-C6YA Sonic can always double jump
(can't use water shield or become Super Sonic)

17 RENT-C6V6 Sonic can always use Fireball Spin Dash
(can't double jump, bounce, or become Super Sonic)

18 RGSA-A6YY Only 1 blue sphere needed to get a chaos emerald
19 AANA-CNA0 Sonic jumps as high as Knuckles (slightly lower than usual)
20 4ANA-CRA0 High jump for Sonic
21 2ANA-CWA0 Super jump for Sonic
22 AANA-C4A0 Mega jump for Sonic
23 AANA-DYA0 Orbital jump for Sonic
24 TB5T-CNCR Knuckles jumps as high as Sonic (slightly higher than usual)
25 PV5T-CRCR High jump for Knuckles
26 AB5T-CWCR Super jump for Knuckles
27 AB5T-C2CR Mega jump for Knuckles
28 AB5T-DTCR Orbital jump for Knuckles
29 ALNA-AACR Rings worth 2 in special stage
30 ARNA-AACR Rings worth 3 in special stage
31 AWNA-AACR Rings worth 4 in special stage
32 A0NA-AACR Rings worth 5 in special stage
33 BLNA-AACR Rings worth 10 in special stage
34 A2NT-CAG6 Only 6 chaos emeralds needed to become Super Sonic
35 AYNT-CAG6 Only 5 chaos emeralds needed to become Super Sonic
36 ATNT-CAG6 Only 4 chaos emeralds needed to become Super Sonic
37 ANNT-CAG6 Only 3 chaos emeralds needed to become Super Sonic
38 AJNT-CAG6 Only 2 chaos emeralds needed to become Super Sonic
39 AENT-CAG6 Only 1 chaos emerald needed to become Super Sonic
40 AANT-CAG6 Become Super Sonic without any chaos emeralds
41 NTNT-CAHL 100 rings needed to become Super Sonic instead of 50
42 FANT-CAHL 40 rings needed to become Super Sonic
43 DENT-CAHL 25 rings needed to become Super Sonic
44 BJNT-CAHL 10 rings needed to become Super Sonic
45 AENT-CAHL 1 ring needed to become Super Sonic

46 AANT-CAGY + AAPA-CAB8 Become Super-Duper Sonic without any emeralds (you still need 50 rings unless using one of the above codes)

47 NTPT-CA50 Rings aren't used up as Super (or Super - Duper) Sonic/Knuckles
48 RHJA-E60L Bonus round always activated after every checkpoint
49 BXLA-EA5G Bonus round is always Slot Machine
50 A5LA-EA5G Bonus round is always Glowing Spheres
51 A36A-CACW Only 6 chaos emeralds needed to become Super Knuckles
52 AZ6A-CACW Only 5 chaos emeralds needed to become Super Knuckles
53 AV6A-CACW Only 4 chaos emeralds needed to become Super Knuckles
54 AP6A-CACW Only 3 chaos emeralds needed to become Super Knuckles
55 AK6A-CACW Only 2 chaos emeralds needed to become Super Knuckles
56 AF6A-CACW Only 1 chaos emerald needed to become Super Knuckles
57 AB6A-CACW Become Super Knuckles without any chaos emeralds
58 NV6A-CADA 100 rings needed to become Super Knuckles instead of 50
59 FB6A-CADA 40 rings needed to become Super Knuckles
60 DF6A-CADA 25 rings needed to become Super Knuckles
61 BK6A-CADA 10 rings needed to become Super Knuckles
62 AF6A-CADA 1 ring needed to become Super Knuckles

63 AB6A-CACL + AB6A-CAHR Become Super-Duper Knuckles without any emeralds (you still need 50 rings unless using one of the above codes)

64 ACCT-CA2R Can't drown

CODES 65 THRU 86 ARE FOR KNUCKLES IN THE SONIC 2 GAME
65 AX6D-AA3W Knuckles doesn't lose rings when hit
66 HWLX-GA2Y Infinite time
67 SD5X-BJT2 Rings worth 2
68 SD5X-BNT2 Rings worth 3
69 SD5X-BTT2 Rings worth 4
70 SD5X-BYT2 Rings worth 5
71 SD5X-B2T2 Rings worth 6
72 SD5X-B6T2 Rings worth 7
73 SD5X-BAT2 Rings worth 8
74 AE5X-AAFY Knuckles starts with 1 life instead of 3
75 AY5X-AAFY Knuckles starts with 5 lives
76 A65X-AAFY Knuckles starts with 7 lives
77 BE5X-AAFY Knuckles starts with 9 lives
78 DE5X-AAFY Knuckles starts with 25 lives
79 GJ5X-AAFY Knuckles starts with 50 lives
80 KN5X-AAFY Knuckles starts with 75 lives
81 NN5X-AAFY Knuckles starts with 99 lives
82 JV1D-CA6W Infinite lives
83 PVWD-CRDC High jump for Knuckles
84 ABWD-CWDC Super jump for Knuckles
85 ABWD-C2DC Mega jump for Knuckles
86 ABWD-DTDC Orbital jump for Knuckles