Sorian,
I gave the game a try and worked through the various menus. I like the menu animation and the graphics look great. I didn't see any issues with any links/menu selections and all items functioned as expected. The game looks great and looks and plays like another one I had tried a while back (don't recall the name but maybe it was the slime volleyball that was mentioned earlier).
In regards to game play, I found that there's a very slight lag with the movement of the player in regards to the tilt action. I noticed that I could start to tilt and there's no corresponding movement to the player and that the player will abruptly stop when dialing back the tilt input. I found the game more difficult without having the precise control of the player. This is on a 3G w/ 4.02. Not sure how it is on a 3GS and up device though. You may want to play with the accelerometer filters a bit to help with the acceleration/deceleration feel (at least that's how it feels to me for what it's worth).
Overall a nice looking game. Did you contract with the graphic artist specifically for these graphics?
G/L with sales.