Guns. Avatars. Teleporting. Lightsabers. Nausea. It took years to get there and a lot of experimenting, but one of the most notable tech developments of the last decade is that virtual reality went from being a fantasy to An Actual Thing. A thing that really works (sorry, Virtual Boy) and you can have in your home. New hardware product lines, completely new kinds of games. It’s fitting that the decade in PC games closes out with Half-Life: Alyx on the horizon. VR has a much wider scope than gaming, to be sure. But it was the passion and imagination of PC gamers that made it happen.