Alligata
They produced games for a number of home computers including the Commodore 64 , BBC Micro , Acorn Electron , ZX Spectrum and Dragon 32 . 
<triplet> Commodore 64 <subj> home computer <obj> subclass of <triplet> BBC Micro <subj> home computer <obj> subclass of <triplet> Acorn Electron <subj> home computer <obj> subclass of <triplet> ZX Spectrum <subj> home computer <obj> subclass of <triplet> Dragon 32 <subj> home computer <obj> subclass of