Similar game - Tunnel Fighter
First, let me say that the game looks nice Trevor!
I have also started a game a while ago, called Tunnel Fighter, see <A
It is about zooming down a tunnel avoiding and shooting enemies (ok, not about balls :) )
For feature fetishists: Tunnel Fighter has texture mapping, and 3d sprites, sound, curving tunnel.
But Tunnel has a secondary weapon :)
Anyway, I'll post this here, to avoid any mistaken identities.
An open, cross-platform journaling program.
A scientific plotting package.