Before I get into the topic of this article, I'm sure many of you are asking yourselves, "What in the world is GOG?" Well, let me take this time to give you guys an introduction of what is. GOG (or Good old Games) is a direct competitor to Steam as well as Green Man Gaming. These three are the biggest digital distributors of PC games. They all have their own pros and cons.

For example, anything bought from Steam can only be played within Steam. Green Man Gaming, allows you to buy a game and use it on any service, as well as trade-in games for store credit. GOG's biggest difference, however, is that it sells you the game DRM-free. That means you can have it on as many PCs as you want and can have them all running at the same time.

So that's our little lesson for today. With summer among us and the unification of Windows slowly approaching, you will definitely be hearing a lot more about PC games and their sales. With Steam's summer sale is expected to go live sometime next week, GOG decided to one-up them and start theirs today with the 2015 DRM-Free Summer Sale.

The sale sees some games hit discounts at a whopping 90%! The sale features a lot of indie favorites that must be picked up for their current sale price. For example, I grabbed Bastion, The Banner Saga, The Vanishing of Ethan Carter: Collector's Edition and FTL for a mere 23.25. How much did I save you ask? I saved a total of $51.40. Crazy right!

GOG is also giving away free games depending on how much money you spend during the sale. Once you spend $1, you are gifted SimCity 2000, $20 gets you S.T.A.L.K.E.R.: Clear Sky and $50 unlocks Xenonauts.

The sale started today and it ends on June 21. If none of the deals are to your liking, they put up new deals every 12 hours, so make sure you don't spend all of your money in one day! So if you're looking for some killer games for your current or even future PC, be sure to check out the deals and start building up your library!