Seems to me back then there was at least one vendor of
a
vector-scanned (as opposed to rasterized) game. Or at least
the product announcement was made--I don't think I ever saw
one up close.
Cheers,
Chuck
Wells-Gardner or some such manufactured a color vector monitor for the
Atari game Tempest. It had problems with some heat and some caps. Most
Tempest games have had their monitors "Re-Cap'd."