This game has some of the easiest achievements I've seen in a while...I guess all of the Sega Vintage Collection games do. Already have 200/200 on it - only one even worth mentioning is the Crab Attack one, but only because you have to play through the Underground Mine stage on Hard.
Anyhoo...picked this up along with Phantasy Star II. Might bite on Sonic 3. Along with Wolfenstein last week for 400 points, we've been getting some pretty solid, cheap games lately.
And to anyone asking why someone would buy these at 5 a pop instead of getting the genesis collection disc...well, I can at least give my point of view. I have that disc as well, but I enjoy achievement collecting, so getting another 200 for playing through Phantasy Star II seems worth it. Not to mention, the collection disc doesn't add online play to the games, unless I'm mistaken. Even if it's kinda boring, it's still nice to know you could play competitive Sonic 2 over Xbox Live, or any of the other co-op like games. And yes, when Sonic and Knuckles comes out, it's gonna be fun to play through Sonic 2 and 3 with Knuckles again. I also like to support a game if it's fairly decent and only 400 points, because god knows they've been boning us on a lot of really crappy 800 point games lately.
Also, the Genesis Collection has Mean Bean Machine on it, which basically knocks the value of that disc down by quite a large magnitude...