Meh. I remember actively playing Shadow the Hedgehog during its initial release date. It was fun for what it was back in its heyday, but replaying it now, it feels so badly executed. Shadow is slippery as all hell, which is why I'd constantly shoot in mid-air in order to reset the momentum and prevent myself from falling off the stage. And Shadow had far too many pitfall stages for its own good.
Guess the game fell to the curse of being a bit outdated. Good that you enjoyed it though, as it certainly was a fun game.