GOG.com, formerly Good Old Games, because good old names, is having their summer sale. Discounts are advertised at up to 90%, and a copy of Rebel Galaxy will be gifted immediately following your first purchase.
For me, this was the moment that I jumped on The Witcher 3. I deliberately avoided it until the DLC were bundled and the whole package was on a significant discount, which is now the case. The Witcher 3 Game of the Year, albeit not the year that we’re in, is now 50% off. Another front-page deal is Dragon Age Origins Ultimate Edition for 80% off, as is the original Mirror’s Edge, although I already have both of them. If you haven’t played it yet, Brothers: A Tale of Two Sons is great, and it’s 85% off (under $2).