If this RNG is as bad as it sounds, then it reminds me of the old IBM generator RANDU, alive and well in 1980. As I recall, it picked an integer in the range [0,32767]. When used to create successive coordinates of points in 3-space, one after the other (when output was divided by 32767.0), all of the points ended up on something like only 20 different planes in the unit cube. And on each plane, the points lay on only a small number of lines. --Dan