Mod Releases Sonic 3 R

I know extra slots gives you exactly that and I think sonic AIR uses C#, however I'm not 100% and on top of that I haven't practiced that

Sonic 3D in Shadow 2D ; Extra Slot Amy 1

extra stars slot free Mecha Sonic - 8:37 VS Super Mecha Sonic

extra stars slot free online Mania Sonic over Mecha Sonic is a Sonic 3 R mod with changed boss Extra Slot Open