I used to play an old game (think it was on a Win95 machine).
It was very basic, and involved a square, where balls would be bouncing within it.
You had to click in the square, and it would send out a harizontal or vertical line. If the line wasn't touched by a ball before it deployed to the wall of the square, it became part of the square & "bricked out".
You had to get a certain percentage of bricking for each level you progressed (with more amounts of balls at higher speed the higher the level).
Can anyone remember what it was called (and if you can download it anywhere) ?