Found these back in 94, before official codes were released.
Sega Genesis Game Genie Ring Codes.
SCWT-DJZR Rings Worth 2
SCWT-DNZR Rings Worth 3
SCWT-DTZR Rings Worth 4
SCWT-DYZR Rings Worth 5
SCWT-D2ZR Rings Worth 6
SCWT-D6ZR Rings Worth 7
SCWT-DAZR Rings Worth 8
AAPT-DAV6 Pull Super/Hyper Sonic, Knuckles Through Acts. (Works for super Tails too.)
SCWT-DDZR Rings worth 51
AAPT-CALA Rings Do Not Count Down With Time, as Super/Hyper Sonic Knuckles.
This code is needed for the Pull Through Acts Code To Work.
SCWT-D8ZR Rings Worth a huge number. IDK what. (Sometimes Random.)
RGSA-A6G6 Any blue square of spheres in special stage which would give you rings, completes the special stage.
I use to have a few more, but they've been lost.
Sega Genesis Game Genie Ring Codes.
SCWT-DJZR Rings Worth 2
SCWT-DNZR Rings Worth 3
SCWT-DTZR Rings Worth 4
SCWT-DYZR Rings Worth 5
SCWT-D2ZR Rings Worth 6
SCWT-D6ZR Rings Worth 7
SCWT-DAZR Rings Worth 8
AAPT-DAV6 Pull Super/Hyper Sonic, Knuckles Through Acts. (Works for super Tails too.)
SCWT-DDZR Rings worth 51
AAPT-CALA Rings Do Not Count Down With Time, as Super/Hyper Sonic Knuckles.
This code is needed for the Pull Through Acts Code To Work.
SCWT-D8ZR Rings Worth a huge number. IDK what. (Sometimes Random.)
RGSA-A6G6 Any blue square of spheres in special stage which would give you rings, completes the special stage.
I use to have a few more, but they've been lost.