I don't see how you can call the Doom "series" overrated. If you wanted to call Doom 3 overrated, I could let you get away with it, even though every review I read pointed out it's flaws, which many agree on (and I did enjoy the game). But the original Doom , although not the first FPS, is certainly single handedly responsible for popularizing the genre. I mean who didn't play that game and have fun? If it hadn't been made, I doubt the FPS genre would be where it is today. Things probably would have happened much differently had ID not met with that success. Is the original overrated? I don't think so. Most people acknowledge it as nothing more than a fun game, and the one that started it all for the genre. Both of which are completely true. No one goes around claiming it's the best game of all time (although the fun of it stands the test of time better than a lot of modern games).