http://www.pcgamer.com/divinity-original-sin-2-approaches-500000-copies-sold-in-less-than-a-week/

Despite an unlucky launch day, Larian's latest RPG Divinity: Original Sin 2 came roaring out of the gate last week, enjoying both critical acclaim and remarkably strong sales for what is, let's be honest here, a pretty niche genre. Yesterday it broke the 75,000 concurrent user mark on Steam, today it's even higher—a little over 85,000, according to Steam Spy—and even more impressive than that, Larian boss Swen Vincke told Eurogamer that it has already sold nearly a half-million copies.   

"It is fantastic, but it is also way beyond what we expected. We're close to hitting 500,000 units sold which is a number I believe took us two or three months with Divinity: Original Sin 1," Vincke said. That's actually pretty close to the mark: The original Original Sin came out on June 30, 2014, and Vincke said in a mid-September blog post that it had achieved a half-million sales somewhere prior to that.