I got the Japanese PSN demo
The graphics are crazy awesome, so clear and bright. Sonic's model looks great too.
I will admit though, the controls feel much different then I was expecting them to. Not that it's a bad thing, but it's defiantly took me a while to get used to the controls.
That said, if you go into the game with an open mind, it's a lot of fun. Much better game than Sonic Rush is. It's just that.. Sonic 4 Episode 1 shares one thing in common with Rush.. the physics =P
When you spin-dash, hold forward on the D-pad / control stick , otherwise you will just stop.
To stop yourself from uncurling on a ramp, jump just at the right moment...
Those are the two most helpful things to know ;3
Oh, and don't be afraid of the homing attack. It's not bad as it sounds.
The game is addicting! My current best time for Splash Hill Zone Act 1 is 1:03:15
Basically, to enjoy this game you have to forget everything you knew about the Genesis games and learn anew =P It's completely different due to the physics. But it's still just as fun.
TLDR: This game plays nothing like the Genesis classics and if you aren’t willing to adjust to the new physics then don’t bother with this game. Just know that you are missing out on a great time.