When was the last time- if ever- you played an arcade vector graphics machine?
For me, it was back in 1998(!). It was in a bar near the courtroom where we were serving jury duty-
The game was Asteroids.
As for color vector games, the last ones I can remember was back in 1987 or 1988: Major Havoc (1987 for sure, in the Hoe Bowl bowling place near Dutchess Community College), and Space Duel either in 1987 or 1988.
Funny thing is, after 1987, I have no memories of having played any vector game until that one time in 1998.