There are a few games around (including at least one old MS-DOS one) of the "bounce the laser beam(s) around to hit the target(s)" variety; to my mind the best one (that I know of) is Chromatron from Silver Spaceship Software, for 32-bit Windows and for Mac. The first part of the tetralogy is free; the others (if ordered together) are just $20, and I recently bought them and even with PayPal adding another $3 to the cost and the British Government adding another $3.50 on top of that, the total was still under £15.
The Chromatron page and the forum together probably link to all the other games of this type (all five or six of them) still in existence.