Recently I remembered my canon had a few levels and whatnot cut from official Sonic material - always make sure to check stuff like that by the way, like unfinished stuff or alternate takes / versions or behind the scenes or extended versions, etc if you're fictionkin by the way. Might be able to find answers, especially if you feel like something is missing or different but you're otherwise compliant in some way.
Not much to say otherwise. Basically what you need to know is that I'm still making those ROM Hacks I once mentioned - you're probably suspecting Hidden Palace and Wood Zone in Sonic 2 and you'd be correct (first things I remembered of cut content being in my canon because they're extremely obvious lol)
Jeez my Hidden Palace is really red lmao, a stark contrast to the colorful SEGA version. Some people compared it to the Nether from minecraft and well...I see it to say the least. It's off screen but in my canon the water in the Palace was actually Acid. Wood Zone on the other hand isn't too unusual, kinda funny slight magenta and teal tints though.
It appears now but Tumblr was being weird about my previous post here - I wasn't shadowbanned it seems but it took a bit to appear in the tags. Check that if you haven't already.