Pre-DOOM

The August 2019 Challenge on GameDev.net was about recreating DOOM with current technology. I missed the original DOOM craze in the 1990s although I had developed some computer games in the decade before that. So I first had to look at the Wikipedia entry on DOOM to see what it was all about. What a coincidence that the story, created in 1993, begins in 2019! Mars is supposed to be colonised …