OtherMichael says:
There's a working, vintage "Computer Space" (wiki) – the first video arcade machine – on ebay. current bid is already over $4,500.
There's a video of a simulation (not original play) here. More info from Antique Computer site.
UPDATE: Coop says: "We used to have one of those, in yellow. I drew a slightly-tweaked version for a PAPER magazine fashion spread."