Here's an excerpt from the magazine Computer Gaming World, reporting on E3 1997. Replace "real-time strategy" with "first-person shooters" and bump up the numbers a little bit—50-75MB!—and this could be from 2014. Some trends just don't go away.
As the gaming press becomes ever more focused on the internet, the printed word is becoming a dying medium. And as with anything on the decline, rarity can at times go hand-in-hand with value.