For those veteran linux people, what was it like back in 90s? I did see and hear of Unix systems being available for use but I did not see much apart from old versions of Debian in use.

Were they prominent in education like universities? Was it mainly a hobbyist thing at the time compared to the business needs of 98, 95 and classic mac?

I ask this because I found out that some PC games I owned were apparently also on Linux even in CD format from a firm named Loki.