I didn't realise this until I saw a thingo on GameSpy saying "Doom turns 10 today."
Since Myst turned 10 on Sept 24 this year, I'd like to bring to the public's attention a great milestone: Myst was out before Doom.
Or Warcraft for that matter. Or any of those classic games. Myst was there earlier. Quite amazing considering the graphical standard compared to the 4-pixel wide characters you saw in Doom.
Kudos to Myst and Cyan for 10 years of reigning in the adventure genre!