I've wanted to try hacking Sonic since sometime in 2015, but couldn't get into until last October, when I discovered SonLVL. After bungling a Sonic 1 hack by messing up a block and not having backups, I decided to try hacking Sonic 2. At first, I intended for the hack to be vanilla aside from having custom palettes, but after changing the Zone title cards, which required an external tool, I decided to try putting in some other custom content, like custom music and some custom setpieces here and there.
VERDANT COAST ZONE
As usual, Sonic starts his adventure in a lush tropical paradise by the beach.
MIDNIGHT METRO ZONE
Sonic next finds himself speeding down the highways of a slightly futuristic city at night.
MARSH PALACE ZONE
Sonic has stumbled upon the ruins of a lost civilization submerged in the murky waters of a swamp.
SPIRIT CASINO ZONE
Sonic decides to satisfy his gambling addiction at this glitzy casino. He'll still have to fight Eggman though.
Yeah, it's a patch since ROMs aren't allowed here. It should be patched to a Sonic the Hedgehog 2 (JUE} (!) ROM.
The demo IS playable beyond Spirit Casino Act 2, but the level layouts haven't been edited yet, aside from the addition of some Rings in Neo Death Egg. They will give you a chance to hear more of the hack's custom music though, most of which I ported myself. Of course, you could also check out the Sound Test to hear those.
"Fortunately, I have a delicate lock-picking technique" *blasts doors open*
-Optimus Prime - G1 - Day of the Machines