SONIC THE HEDGEHOG - LEVEL SKIP
Go to title screen - Up Down Left Right - then hold A and Start.
SONIC THE HEDGEHOG 2 - DEBUG
Play tracks (about 1 sec each) - 1,9, 9, 2, 1, 1, 2, 4, select your stage, press A and then hit StartSONIC THE HEDGEHOG - LEVEL SKIP
Go to title screen - Up Down Left Right - then hold A and Start.
SONIC THE HEDGEHOG 2 - DEBUG
Play tracks (about 1 sec each) - 1,9, 9, 2, 1, 1, 2, 4, select your stage, press A and then hit Start