Thanks all, I don't like how the tunnel moves off center so quickly. It's because of how I did the curving while keeping the letters on the outside of it. There are lots of little annoyances like that left in, but they'll have to wait for another day.
@ shockwave
I'm not familiar with stunRunner, I'll use the google.

I wanted to do a sort of game where you'd steer with the mouse to stay inside the tube. Even though I managed convincing movement and rotation they didn't exactly correlate with eachother and the rotation made the rings unevenly spaced. The 3d is completely faked and I use the scale of the rings as their z/depth value.
All in all it was more difficult then I expected, but one day I'll make this into a game.