EuroGamer has an interesting interview with Andrzej Sapkowski, the author of the Witcher books. In the early 2000s Sapkowski made a deal with CD Projekt RED's co-founder Marcin Iwinski. The company could use his world and characters, but should write a completely original story. Sapkowski was offered a portion of profits from any games created from his IP, including the latest The Witcher 3: Wild Hunt and Gwent, which he turned down in favor of an immediate cash flow.
"I was stupid enough to sell them rights to the whole bunch," he says. "They offered me a percentage of their profits. I said, 'No, there will be no profit at all - give me all my money right now! The whole amount.' It was stupid. I was stupid enough to leave everything in their hands because I didn't believe in their success. But who could foresee their success? I couldn't."
If you are interested in more information about Sapkowski's background as a writer and his future plans for the Witcher franchise, you can head over to EuroGamer.