This game improves in a lot of areas where Sonic 1 faltered. The layout of the Zones generally balance platforming and speed, making them more fun to traverse. Though what probably contributes more to that is the addition of the Spin Dash. It's incredible how a single move can change how you play the game. Not only that, it's a move that feels so natural to Sonic's gameplay. It would not feel out of place if they added it to the original Sonic (which they did eventually) and it makes you wonder why they never thought of it.

I'd say Sonic 2 has overall better Zones than 1, but the bosses are much more frustrating, in my opinion. Also, the Special Stages are a major headache. The controls are not smooth yet the stages almost always expect you to do very well. You get hit once or twice and you're more than likely not going to be able to get the emerald. This makes the Special Stages not feel too exciting to replay.

Tails is great. Love that little guy.