Yes you can. But... you'll need Debug Mode or Level Select. The only Cheats i know.
no
The anagram of sonic the hedgehog "sonic the hedgehog."
sonic the hedgehog
sonic the hedgehog
Sonic the Hedgehog
Sonic the. Hedgehog
Sonic the Hedgehog
Sonic the Hedgehog
Sonic the Hedgehog
sonic the hedgehog
sonic the hedgehog
Different Sonic games have different cheats. If you are refering to Sonic the Hedgehog for Mega Drive, there is a level select cheat but it differs in control depending on which version you play. Sonic the Hedgehog (2006) for Xbox360 and PlayStation 3 has no cheats, other than shortcuts and multiple glitches that can be abused.