The 1-up Song currently has a habbit of crashing the game, usually when it fades back into a song. He can't active collasping platforms, falling platforms, moving platforms, and HTZ zip lines

He can't steal a bubble from you anymore, he now leaves the bubble after breathing it like in Sonic Mania Allow you to get more points over the other player in case you didn't want to finish the level yet. In 2 player mode the Signpost also Doesn't lock the Screen anymore when it appears on Screen, Only when you cross it. This also works in 2 Player mode as well so you can have 1 player songs in 2 player mode You can hold B while a Level is loading to have different music playing, like the 2 player songs

Each Act has a Different Color Palette, to give it that Sonic 3 feeling Enchanced Graphics that looks nicer and matches Yasushi Yamaguchi's artwork much closer (as well as imported graphics from Sonic Mania) An Extended Options screen with 2 Pages These modes don't just make the Game Easier/Harder, They actually rearrange the Level Layout to make it different and Easier/Harder (Think of them more as Sonic Jam's Easy mode or Sonic Mania's Encore Mode) An Easy and Hard mode that rearranges the Level Layout and adjusts the Bosses. The Level Layouts have been modfied with bugfixes and new areas for Knuckles and Tails to Explore Tails's Shorter Height is now actual taken into account for collision instead of just reusing Sonic's Height. Tails can Fly/Swim (but can't carry Sonic/Knuckles yet) Knuckles is playable, along with and option to have Tails follow him (Though he is not playable in 2 Player mode just yet) The original soundtrack is available as an option Remixed Music and different music for each Act. To access it, highlight Emerald Hill and hold C and push Start. Hidden Palace Zone has been added as a Extra Level, you can find in Mystic Cave Act 2 if you fall into the Pit (Just like in the Moblie Version). Tons of Bug Fixes, Ranging form Big to tiny little fixes

Sonic 2 casino zone tails