For a limited time, GOG.com is giving away free copies of The Witcher to celebrate the game's 5th birthday. Getting a copy is simple: just buy any game and you'll receive a free copy of The Witcher: Enhanced Edition with your purchase.
In case you don't know what The Witcher is about, it's a single-player RPG from CD Projekt RED that won a whole mess of awards. It's regarded as being on par with RPGs from BioWare. The game also saw the release of a sequel, so you might want to play The Witcher before delving into the story of the second game. A third Witcher title, titled "Wild Hunt" is on its way.
The offer for The Witcher will last until Oct. 17, so grab it while it's available.