Microsphere was a British software company formed in Muswell Hill, north London[1] in 1982 by husband and wife team David and Helen Reidy,[2] best known for several popular computer games in the mid 1980s.
The Reidys targeted the then recently released ZX Spectrum, and initially attempted to write business software, producing the Visicalc clone Omnicalc, but quickly realised that the future for the machine lay with games after their first effort, a cassette containing Crevasse and Hotfoot, received a good review in Sinclair User.
[1] The company never expanded, as the founders had no motivation to do so, and as time progressed, they found it increasingly difficult to cope with the more professional marketing campaigns that started to be introduced in the maturing computer game industry.
"[2] The company's last release was the detective adventure Contact Sam Cruise, which according to David Reidy wasn't commercially successful, blaming software piracy for lack of sales.
Uninterested in developing for the emerging 16 bit computers and consoles, he decided to change careers and became an electrical engineer.