http://www.sonicstadium.org/news/sonic-4-playtested-by-community-member-impressions-inside/comment-page-1#comment-15684
* Developed by Dimps
* Four Zones + Special Stages
* Level design like Sonic Advance 2
* Busted Spin Dash and Jump mechanics, a la Sonic Advance 2
I don't have any problems with the game being developed by Dimps -- I liked The Rush games and Unleashed on the Wii, and I was expecting it to be only a few zones long given the distribution method, but the thing with it being basically a Sonic Advanced 2 duplicate is an instant put off.
I was running on a nostalgia high thanks to this game's announcement and the coming of Mega Man 10 and Pokemon Heart Gold, but it came crashing down as soon as word got out about it being as pointless as Advance 2. It all seemed so promising early on, like Sega was doing something right for once: Sonic's design had a perfect balance of old and new, the music was just right and it picked up right when Sonic 3 and Knuckles ended. v_v