Skyrim is 5 years old. Civ 4 is 11 (!) years old (and Civ 5 has native Linux support). Not all, but MOST of the top titles from the past couple years have native Linux support. Many of those that don't can be run just fine using WINE or even a VM, especially older games. Anything built in Unity will have native support for Windows, Mac, and Linux without much extra effort by the developer, and as such Linux support is now the norm for most indie games as well.
Here are some highlights with full native Linux support (SteamDB is helpful for this):
* The Witcher 3 / Wild Hunt
* Don't Starve
* Kerbal Space Program
* Almost everything by Valve (Portal, Half Life 2, CS:GO)
* Borderlands 2
As a gamer who just switched his main gaming rig from Windows to Ubuntu (in part because of this Windows 10 nonsense), while there are still some headaches, it's a better time than ever to make the switch. We're really reaching a tipping point.