Sonic Mega Collection Gecko Codes (US)

This page is dedicated to all of the Gecko Codes that I have for Sonic Mega Collection (US) on the Nintendo Gamecube. If you don't see the code you're looking for on this page I recommend you check out my Sonic Mega Collection (US) Action Replay Codes instead.

When it comes to using the codes on this page/website there's two good Emulator choices available to you. You have RetroArch which is one of the more popular multi-system Emulators and then you have Dolphin (recommended) which just emulates GC and Wii games. Follow the link provided to learn more about using these codes on the Emulator of your choice.

 

 

16:9 Screen Size

C21A71E0 00000006
3E203F80 62310000
9222AA90 3E203F40
62310000 9222AA94
3E203FAA 6231AAAB
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000

 

16:9 Non-matted Screen Size Code

C21A71E0 00000006
3E203F40 62310000
9222AA90 3E203F10
6231A3D7 9222AA94
3E203FAA 6231AAAB
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000

 

21:9 Screen Size Code

C21A71E0 00000006
3E203F80 62310000
9222AA90 3E203F12
62314925 9222AA94
3E203FE0 62310000
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000

 

21:9 Non-matted Screen Size Code

C21A71E0 00000006
3E203F40 62310000
9222AA90 3E203EDC
623128F6 9222AA94
3E203FE0 62310000
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000

 

48:9 Screen Size Modifier

C21A71E0 00000006
3E203F80 62310000
9222AA90 3E203E80
62310000 9222AA94
3E204080 62310000
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000

 

48:9 Non-matted Screen Size Modifier

C21A71E0 00000006
3E203F40 62310000
9222AA90 3E203E41
62310625 9222AA94
3E204080 62310000
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000

 

4:3 Screen Size Code

C21A71E0 00000006
3E203F40 62310000
9222AA90 3E203F40
62310000 9222AA94
3E203F80 62310000
9222AAA0 C222AAA0
EFB100B2 00000000
041A7200 C062AA90
041A7294 C122AA94
C21A72A8 00000002
C122AA90 ED090024
60000000 00000000