Three years earlier, the development for the 1984 game "Match Point" for ZX Spectrum (the graphics in the video is original, the sound is fake by the youtube video producer):

https://www.youtube.com/watch?v=eRO_nY-d94w&t=22s

was done by then-just-software company named Psion on their VAX computer:

https://archive.org/stream/sinclair-user-magazine-036/Sincla...