[quote=@Dynamo Frokane]
<Snipped quote by Sigurd>

Doom is one ofnthe most highly praised and cited PC games of all time, often credited with modernising the FPS genre as a whole. If you think that is 'underrated' then you are just not satisfied that people dont like the gane as much as you do.
[/quote]

Slint is highly praised and credited with creating the 90's, rock-wise, yet they are not that popular nowadays and no one outside some hipster circles says yeah dude, play some Slint! The same goes for Doom. It's kind of dead now, compared to the 90's let's say or compared to other FPS's people tend to play. The last year's release helped, I admit that.

And I am just nostalgic about it, I don't really like in any special way to be honest. 

I guess we could say it's 'underpopular' instead of underrated, because it is considered a classic like you said. But that's the meaning I thought was implied in this thread when I agreed with cpldingo.