All purchases made at GOG will come with a free copy of The Witcher: Enhanced Edition until Thursday, Oct. 17 at 5:59 a.m. ET.
CD Projekt Red's fantasy role-playing game game normally sells for $9.99.
"This is the final week of our 5th Birthday Celebration," the promotion's official page reads. "We're going to go above and beyond the call of birthday, though, and give you guys something incredible for our final thank you: buy anything on GOG.com — yes, anything — and get a free copy of The Witcher: Enhanced Edition with any purchase."
If you're looking for something to purchase, the folks at GOG suggest the real time strategy/dragon combat game Divinity: Dragon Commander, which is on sale for $23.99 (normally $39.99). Current top sellers include Fallout 2 for $9.99, Fallout for $9.99, Theme Hospital for $5.99, Freespace 2 for $9.99 and Sid Meier's Alpha Centauri for $5.99.