Just an fyi, I don't want to be THAT guy but after playing the demo, I have to say that the ONLY thing I found wrong with the game was the physics. There were a few little petty things I wasn't 100% pleased with such as the less than perfect music and the like, but if future episodes fix the wonky physics I will have next to no complaints regarding this game if the demo is a proper example of what the full game is like. They're the only thing making me question whether or not I should buy the game, and if they get fixed down the line I will more than happily not only download Episode I, but future episodes that present these changes as well. This probably won't make any sort of difference in anything, but I'm just letting the word out that if SEGA can fix this one issue than I'll be pretty much 100% satisfied, as would a boat-load of fans. EDIT: FYI, when I say "physics changes" I mean stuff along the lines of momentum being completely unaffected when you jump and things in that vein. Sonic's weightiness could be improved as well, but my main issue is whenever Sonic curls up into a ball or jumps he loses all momentum unless you hold right.