I think Greg
Thompson said he brought Maze to MIT in 1974. Wikipedia
says 1973. The game was first developed at NASA Ames in 1972.
Ok, chances are
that predates PLATO MUGs by 2-3 years.
Spasim from 1974 is usually regarded as contemporary with Maze.
I'm not so sure about that 1973 dating; after all it's Wikipedia.