Spectrum Computing

Basically IIRC the main screen looked a lot like Maziacs. However, you were armed with a laser, and had to shoot these roaming balls. The inlay cover had a picture of a ball on the front. There were also doors that would slide open on contact. I seem to remember it being very playable.

Thanks in advance!

Found it. It was Androids. http://www.worldofspectrum.org/infoseek ... id=0000197