I was reading on the history of early computing and noticed NeXT had an implementation of Maze War (originally developed at NASA during the 1970s), attributed as an early implementation of networked first person shooters.
I had some spare time this week, so out of interest, I networked my two cubes and was able to get Maze War running. :)
I never knew NeXTSTEP even had a Maze War port. That's hot.