Whatever happened to videogames with a PLOT?

[somethingillremember]

Very recently, I've been playing a fairly new game made on the 94-96 Marathon engine called Marathon:Eternal. The graphics are a little bit better than the original, but really that's only because they are higher resolution (you can only do so much, as the engine is limiting). Also, the challenges are kind of monotonous, and mostly involve kill these guys, flip this switch to open this door, and then kill more guys.

But there is something else about this game, something that makes this game on my top 10. You see, because this game cannot do much toward gameplay or graphics, it has to make up for it with something else. A plot. A really GOOD plot.

In fact, even the best of game plots, like Bioshock, don't come close to what this game achieves. So why can't games these days come up with some good plots? Are there games that I have not played that have good plots? Or is it just Marathon with a good plot?