Comment by frumiousirc

Pedantically, this game is at least 2D due to including time. It presents more dimensions if we consider the different LED colors.

I'm now trying to contemplate what a truly 1D pong game would be. We can't escape time so we would have to remove positional and chromatic dimensions. That leaves us with a single blinking monochromatic LED.

Perhaps the game would resemble Richmond's flashing lights.