The key is to JAM suger down his throat!!!!!! and then he will get hyper and EXPLODE!!!!!
the end!

Activate debug and start any level. When you are about to lose a life enable debug at the
right time and you will survive.

note: The code can't work in “TIME OVER”. You can do this in SONIC 2, SONIC
1,and SONIC & KNUCKLES.

on sonic 3c go down 3 times in title screen preess d 3 times and go on hidinn palace zone
4 and on second bridge fly with tails and after you make it kepp going after you see an s
box and jump on and you have super tails

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063w9uhnm60u93whn

beat the game with sonic and tails until you get 2 hydrocity act1. after you go thru the
tunnel and break out of the wall, go2 the 3rd moving platform and have tails lift you
until you are over the first set of fans. tails will float and you will stay there hanging
on to an invisible tails.

for shadow the hedgehog you will need the game genie enter this code w26a-a6tl and you
will have shadow

Get 50 rings then go to a checkpoint jump in the ring above there will be a bounce DON'T
FALL and only collect a bubble shield on stage 2  your fire and magnet shield will were of
on the water. you get 2 chances on this bonus level to get a shield. so collect 50 rings
before going to a checkpoint

as tails go in debug mode (because tails cant fly that high) choose 
hydrocity zone act 1 you will find a lot of rings

in sonic 3 go on game genie and write this code aa6t-aaxc level select debug mode and go
on it you will have level select!!