I can't wait for the full game to be released! It's a great work in progress so far, though the physics could use some work. I also look forward to seeing the special stages, and hearing the rest of the soundtrack.
On first impressions, it impressed me more than Sonic 4, however both are still works in progress (Sonic 4 being episodic and all), so until we see a full version of this, and all Sonic 4 episodes released, I can't really compare.
Off topic in regards to Sonic 4: What the holy fuck were they thinking with the special stage design and the boss music? They were awful!
On first impressions, it impressed me more than Sonic 4, however both are still works in progress (Sonic 4 being episodic and all), so until we see a full version of this, and all Sonic 4 episodes released, I can't really compare.
Off topic in regards to Sonic 4: What the holy fuck were they thinking with the special stage design and the boss music? They were awful!