G:Sonic The Hedgehog 2

C:Enable Stage Select|FFFFD0:0100|Parasyte|At the title screen, hold the A button and push Start to enter the stage select menu.|
C:Enable Debug Mode|FFFFFA:0100|Parasyte|
C:Infinite Rings|FFFE20:00C8|Parasyte|This code also allows you to pass the special stages with ease, and always get the Chaos Emerald at the end.|
C:Infinite Lives|FFFE12:0009|Parasyte|
C:Stage/Act Modifier|FFFE10:xxyy|Parasyte|Quantity Digits for "xx"(stage):<br><br>00 - Emerald Hill<br>01 - [glitch] Emerald Hill<br>02 - [glitch] Emerald Hill<br>03 - [glitch] Emerald Hill<br>04 - Metropolis<br>05 - Metropolis [3]<br>06 - Wing Fortress<br>07 - Hill Top<br>08 - Hidden Palace (!)<br>09 - [glitch] Emerald Hill<br>0A - Oil Ocean<br>0B - Mystic Cave<br>0C - Casino Night<br>0D - Chemical Plant<br>0E - Death Egg<br>0F - Aquatic Ruin<br><br><br>Quantity Digits for "yy"(act):<br><br>00 - Act 1<br>01 - Act 2<br>02 - Act 3<br><br>Not all stages have acts 2 or 3.|
C:Always Have 224 Rings (Official Code)|FFFE21:00E0|Mr. Book|
C:Unlimited Time|FFFE24:0007|Mr. Book|
C:Super Speed! [Sonic]|FFF761:6410|radical dreamer|
C:Super Speed! [Tails]|FFFEC1:6410|radical dreamer|