TL;DR: Valve's Steam, which launched in 2003, became a major digital storefront by 2008, revolutionizing PC gaming. Many gamers have amassed extensive libraries, often expanded during Steam Sales.

I’ve been a PC gamer for almost two years now. Yes, it’s not a long time, and yes, I definitely hopped on the hype train a little later than most. But still, you’d think that by now I’d have a solid ...

In brief: Do you ever look at your extensive Steam library, including all those games you bought in sales but never got around to playing, and wonder how much money you've spent in total? The good – ...