pretty cool remake of the master system version of sonic 1
Visually it looks like the original but it adds a bunch of new content including making all of the sonic mania plus characters playable, new zones and adding a save file. The physics in the game are tweaked slightly from the original but it plays mostly the same. The new zones they added were the zones that weren't originally added from sonic 1 MD being marble, spring yard and starlight zone. Visually these zones look great and match the original game and the remade music is great. The game is slightly buggy but it isn't the end of the world
definitely would recommend a playthrough if you enjoyed the original game but would still recommend you try it if you didn't like the og