These are some screenshots taken from kbillar 1.0 :
A simple pool table
A Cos(y) table . The user can enter his own equations to define his own table.
A Exp(Cos(x)+Sin(y)) table
A torus table
A spherical table
You can also play billiard with the MIR and the Alpha Station
A -1/Sqrt(x*x+y*y) table
You can also make your own borders, in this example, a maze border
on a Cos(x)+Sin(y) table.
A cylindrical table
The controller window (although you can move around the table without
using this window at all, sometimes it's convenient to have it there).
Finally, a nice shot of a nightmare table, Exp(Sin(x*y+x*x+y*y)) (don't try it at home!)