Here is a link to play the game:
To play you just have to (carefully) fire a laser (by pushing the FIRE button in the screen or by pressing the SPACEBAR on a laptop/computer) to hit as many green dots or other coloured “prizes” and avoid getting killed by your own laser reflections. Watch out for the BLUE boxes as they reverse the laser direction back towards you.
It should work on any device, laptop or desktop browser but I prefer playing it on a large desktop screen with the volume turned up to better appreciate the 8-bit sounds coming from it.
Here is a screen capture of the game as it appears in-between games…