Ah man, I did not like this one as much as I did when I was younger. The controls are unmanageable nowadays without a spin dash, and the levels... oh god the levels. Green Hill Zone is great, but then you get to the god-awful Marble Zone, then the slightly less bad yet still pretty mediocre Spring Yard Zone, and then you reach hell itself in the form of Labyrinth Zone, only for the game to tease you with Star Light Zone, a stage that's actually decent, and then go right back to Scrap Brain Zone where I don't even give a damn anymore. I'm sure the game was cool back when it was released, but the original version of Sonic 1 is a pain to get through, ESPECIALLY with all the Chaos Emeralds. If you're going to play this one, make sure it's one of the improved versions like the Christian Whitehead re-release.