Columbia subject headings:
Computer games--History--20th century.
Computers--Social aspects--Great Britain--History--20th century.
Microcomputers--History--20th century.
Harvard subject headings:
Computer games--History--20th century.
Computers--Social aspects--Great Britain--History--20th century.
Microcomputers--History--20th century.
Princeton subject headings:
Computers--Social aspects--Great Britain--History--20th century.
Microcomputers--History--20th century.
Video games--History--20th century.