I know most people have never played Marathon. It really was something only Mac users were aware about at the time. But if you’ve never even seen it, here’s what the original experience was like!
Discussion
Some people have posited that Marathon and Halo exist in the same universe – seeing how the setting for both games is in space. Maybe at one time that was the intention. But now that Microsoft owns the IP for Halo, I don’t think that’s feasible. Still it’s a fun thought experiment.