
There’s been no shortage of shitty games since I last had time to write a preview, but I can tell you this is not one of them. This Sonic done right, remember that abomination Sonic Unleashed? Fuck that game. They took the lock-on mid air dash from it and put it into Sonic 2, updated all the graphics, and added a few new features (watch the video at 1:45). The controls are perfect, 1 button does everything. There’s also an online leaderboard of the fastest clear times and by looking at it I discovered there’s a lot of secret stages and unlockables, like Gold Sonic in the video.
Verdict: BUY. It’s available on the PlayStation Network, Xbox Live Arcade, WiiWare, and iPhone.
It's a pretty complete game for $8.
There's 4 zones with 4 acts unlocked at the start but looking at the leaderboards there's a final boss zone and 8 special stages. From that video it looks like you need all the chaos emeralds to get golden sonic and I'm guessing that's how you get the special stages also.
That's actually not too bad... the FF4 sequel gave you about 3 hours of gameplay for each "chapter" from what I heard.
The stages are massive too.