
1) Video game publisher
Found on
https://www.crosswordclues.com/clue/quicksilva

Quicksilva was a British games software publisher active during the early 1980s. Amongst the company`s successes were Jeff Minter`s Gridrunner (1983), Bugaboo (1983, aka La Pulga) and Fred (1983, titled `Roland on the Ropes` in the Amstrad version), two titles licenced from Spanish software house Indescomp S.A. Sandy White`s Ant Attack (1983)...
Found on
http://en.wikipedia.org/wiki/Quicksilva
No exact match found.