Like Steam, GOG is also having their 2014 summer sale. Many games up to 80% off. I bought a handful of games myself for between 1.49 and 1.99 each.
Re: GOG - 2014 DRM-Free Summer Sale
I looked but there arent any main stream games. Do you recommend anything?
Re: GOG - 2014 DRM-Free Summer Sale
You're right, they're mostly retro games. Out of the more recent games, they have the Witcher series. Apart from that I mostly go there for my retro games and I prefer this over Steam since it's DRM-free.