Every year we pick 100 games to hail as the best PC games that you can play today. It's an inherently fraught endeavor.
100 is quite a large number if you're talking about how many creepy Victorian dolls someone owns, but it's not all that many PC games. Nearly 20,000 games released on Steam last year alone, and we're picking from the entire history of the medium (albeit with a particular focus on games we recommend to today's audience).
