Spacewar wa vector art, not sprites.

I'm reserching for a youtube video bout what we could consider teh 1st pixelart ever created.
Kare created the Icons in 1983-86 acordingto wikipedia.
Before that, Space invaders was release in 1978 that definetly must be considered pixelart.
Also pong (Odyssey Magnabox clone) and a bucnh of Atary games where relased from 1972 and 1978, but with this ones we can discuse if can be considered pixelart or not.
Befora that I could only finf the digitalization of photografy and vector art, but definetly thats not pixelart.
Do I miss somthing?